Homework Answers
As the P-value = 0.17911147 > 0.05, we fail to reject the null hypothesis.
Ans : Option A.
Add Answer to:
Use the following information to to answer the next question: Mary did an analysis of acute...
t-test: two-sample assuming equal variances Subject ID Height Mean 9.9 68.85 Variance 39.0421053 35.0815789 Observations 20...
t-test: two-sample assuming equal variances Subject ID Height Mean 9.9 68.85 Variance 39.0421053 35.0815789 Observations 20 20 Pooled Variance 37.0618421 Hypothesized Mean Difference 0 df 38 t Stat -30.621066 P(T<=t) one-tail 1.0856E-28 t Critical one-tail 1.68595446 P(T<=t) two-tail 2.1711E-28 t Critical two-tail 2.02439416 From your results, please report the following: Variable 1 Mean: Variable 2 Mean: Two-tailed p-value: Is your p-value significant? (alpha=0.05) If your results are significant/not significant, what can you conclude from your data? (i.e. is there a...
Please help me, I wasn't sure which test to use so I did both of them on excel. Please let me know which is correct and answer A-C. I will give the answer a thumbs up if you can get back to me asa...
Please help me, I wasn't sure which test to use so I did both of
them on excel. Please let me know which is correct and answer A-C.
I will give the answer a thumbs up if you can get back to me
asap.
The physicians also believe that people who are obese are more
likely to die earlier than those who are not. Again use the data in
the Framingham sample to test this theory by comparing the mean...
Question 45 Not yet answered Points out of 1.00 Flag question To investigate the effect of...
Question 45 Not yet answered Points out of 1.00 Flag question To investigate the effect of smoking on breathing, the tidal volumes of 100 people who smoke and 100 non-smokers were measured using spirometry. To see if there was a significant difference in tidal volume measurements between the two groups of people, a t-test was carried out. The t-test results are presented in this table. Which of the following would be the best conclusion best on the t-test results? Variable...
How do I write the results of this t-test out in a statsically way ? $120,000...
How do I write the results of this t-test out in a statsically
way ?
$120,000 $75,000 t-Test: Two-Sample Assuming Unequal Variances Mean College Degree 131233.3333 1795633333 30 High School Degree (Only) 60966.66667 582171264.4 Variance Observations Hypothesized Mean Difference df 46 t Stat P(T<=t) one-tail t Critical one-tail PIT<=t) two-tail t Critical two-tail 7.892632799 2.1299E-10 1.678660414 4.2598E-10 2.012895599
Compare the different Genders of subjects in the Psych_Data.xlsx data set to determine if there is...
Compare the different Genders of subjects in
the Psych_Data.xlsx data set to determine if there is a
statistically significant difference in the mean
Anxiety Scores (anx_score) between the different
gender groups. Be sure to state the type of test, state the Ho and
Ha, include all relevant Excel results and plots, and write final
conclusions for the full results of the test in context. Be sure
that your final conclusions are written in common terms for an
average person to...
A researcher wanted to see if students will learn more effectively with a constant background sound,...
A researcher wanted to see if students will learn more effectively with a constant background sound, as opposed to an unpredictable sound or no sound at all. She randomly divides twenty-four students into three groups of eight. All students study a passage of text for 30 minutes. Those in group 1 study with background sound at a constant volume in the background. Those in group 2 study with noise that changes volume periodically. Those in group 3 study with no...
Please use this information to answer the next questions An investigation was launched to address the...
Please use this information to answer the next questions An investigation was launched to address the effectiveness of an antibacterial soup in reducing operating room contamination. The new soup was fosted in a sample of eight operating rooms in the greater Seattle res Data was collected on the level of operating room contamination her values indicate greater contaminar on in these light operating rooms before the new soap was used and after the new soap was used Output are based...
Lead component in water alters the flavor and high concentration of lead can pose a serious...
Lead component in water alters the flavor and high concentration of lead can pose a serious health hazard. Ten pairs of data were taken measuring lead concentration in bottom water and surface water. Does the data suggest that the true average concentration in the bottom water is different than that of surface water? The results of the study are shown below. Location Bottom Surface t-Test: Paired Two Sample for Means 0.530 0.515 Bottom Surface 0.366 0.338 Mean 0.6649 0.5845 0.667...
Suppose you want to determine whether there is a significant difference in mean test scores for...
Suppose you want to determine whether there is a significant difference in mean test scores for females and males. The test is out of 600 points. Using the following hypotheses: Ho: U1 - U2 = 0 HA: U1 - U2 (not equal) 0 And alpha of 0.05 you obtain the following results t-test Two-sample assuming unequal variances Females Males Mean 525 487 Variance 3530.8 2677.818182 Observations 16 12 Hypothesized Mean Difference 0 df 25 t stat 1.803753 P (T<=t) one...
t-Test: Two-Sample Assuming Equal Variances Variable 1 Variable 2 Mean 12.89795918 17.66666667 Variance 161.2185374 567.8266667 Observations...
t-Test: Two-Sample Assuming Equal Variances Variable 1 Variable 2 Mean 12.89795918 17.66666667 Variance 161.2185374 567.8266667 Observations 49 51 Pooled Variance 368.6716646 Hypothesized Mean Difference 0 Df 98 t Stat -1.241549191 P(T<=t) one-tail 0.108683158 t Critical one-tail 1.660551217 P(T<=t) two-tail 0.217366316 t Critical two-tail 1.984467455 Is there a significant difference between the two sample means? If you answer, “yes,” what is your reasoning? If you answer, “no,” what is your reasoning? Please state the conclusion, or your interpretation of the results in terms...
Please help me, I wasn't sure which test to use so I did both of
them on excel. Please let me know which is correct and answer A-C.
I will give the answer a thumbs up if you can get back to me
asap.
The physicians also believe that people who are obese are more
likely to die earlier than those who are not. Again use the data in
the Framingham sample to test this theory by comparing the mean...
Question 45 Not yet answered Points out of 1.00 Flag question To investigate the effect of smoking on breathing, the tidal volumes of 100 people who smoke and 100 non-smokers were measured using spirometry. To see if there was a significant difference in tidal volume measurements between the two groups of people, a t-test was carried out. The t-test results are presented in this table. Which of the following would be the best conclusion best on the t-test results? Variable...
How do I write the results of this t-test out in a statsically
way ?
$120,000 $75,000 t-Test: Two-Sample Assuming Unequal Variances Mean College Degree 131233.3333 1795633333 30 High School Degree (Only) 60966.66667 582171264.4 Variance Observations Hypothesized Mean Difference df 46 t Stat P(T<=t) one-tail t Critical one-tail PIT<=t) two-tail t Critical two-tail 7.892632799 2.1299E-10 1.678660414 4.2598E-10 2.012895599
Compare the different Genders of subjects in
the Psych_Data.xlsx data set to determine if there is a
statistically significant difference in the mean
Anxiety Scores (anx_score) between the different
gender groups. Be sure to state the type of test, state the Ho and
Ha, include all relevant Excel results and plots, and write final
conclusions for the full results of the test in context. Be sure
that your final conclusions are written in common terms for an
average person to...
A researcher wanted to see if students will learn more effectively with a constant background sound, as opposed to an unpredictable sound or no sound at all. She randomly divides twenty-four students into three groups of eight. All students study a passage of text for 30 minutes. Those in group 1 study with background sound at a constant volume in the background. Those in group 2 study with noise that changes volume periodically. Those in group 3 study with no...
Please use this information to answer the next questions An investigation was launched to address the effectiveness of an antibacterial soup in reducing operating room contamination. The new soup was fosted in a sample of eight operating rooms in the greater Seattle res Data was collected on the level of operating room contamination her values indicate greater contaminar on in these light operating rooms before the new soap was used and after the new soap was used Output are based...
Lead component in water alters the flavor and high concentration of lead can pose a serious health hazard. Ten pairs of data were taken measuring lead concentration in bottom water and surface water. Does the data suggest that the true average concentration in the bottom water is different than that of surface water? The results of the study are shown below. Location Bottom Surface t-Test: Paired Two Sample for Means 0.530 0.515 Bottom Surface 0.366 0.338 Mean 0.6649 0.5845 0.667...
Most questions answered within 3 hours.
-
Please help:
please I need just explanation in few sentences. i just want you
to say...
asked 4 minutes ago -
The terminals of a 0.70 V watch battery are connected by a
140-m-long gold wire with...
asked 4 minutes ago -
Can someone’s personality be classically conditioned? Why or why
not?
asked 12 minutes ago -
A 70g steam sample at 150C was converted to ice at
150C.Calculate the total amount of...
asked 15 minutes ago -
A stretched string has a mass per unit length of 3.91 g/cm and a
tension of...
asked 17 minutes ago -
QUESTION 1 (30 marks)
Jo-Anne just bought 200 bonds at a purchase price of R1 043.70...
asked 19 minutes ago -
•How many N atoms would be present in 0.378 moles of
N2O?
•2. If you have...
asked 21 minutes ago -
1. Answer A-D having to do with Ohm's Law:
A. What is the resistance of a...
asked 45 minutes ago -
Question :1 (40%, 8% per sub question)
A firm is evaluating two mutually exclusive projects that...
asked 58 minutes ago -
Acme Company insured its building on a replacement cost basis
for $700,000 under a property insurance...
asked 58 minutes ago -
Suppose 4.8 g of zinc is treated with 7.4 g of pure hydrogen
chloride. What is...
asked 1 hour ago -
In an effort to cut down on garbage, Custodial Staff remove all
the garbage/recycling/compost cans from...
asked 1 hour ago