Homework Answers
Correct option "B"
Do a z-test
Explanation:
When we want to find national average than we are talking about large population so, we have to take large sample size and according to central limit theoram when sample size is more than or equal to 30 than we assume sample is normally distributed and here we prefer z-test.
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19. I test the entire population of FMU students driving ability and get u = 320...
It is known that nationally, students attending four-year colleges get an average of 6.75 hours of...
It is known that nationally, students attending four-year colleges get an average of 6.75 hours of sleep per night, with a standard deviation of 1.7 hours. You are interested in seeing if students who attend commuter colleges (colleges where students must commute to school because there are no dorms on campus), such as John Jay College of Criminal Justice, differ significantly from this national average. Complete the following steps in order: What are the population mean and population standard deviation?...
bA sample of 150 snudents selected randomly from a population of students in college. Their ages...
bA sample of 150 snudents selected randomly from a population of students in college. Their ages are presented in the table below: Age (years) No. of students | 19-23 24-28 I 29-3-34-38 139-431 44-48 18ーー26-ェ49 34-6 7 A a -0.05, test the hypothesis that the sample mean is equal to the population mean 32 years. (7 Marks)
Using the results below: M1 = 18.57, M2 = 18.33, SM1-M2 = 0.97, tcv = 1.997...
Using the results below: M1 = 18.57, M2 = 18.33, SM1-M2 = 0.97, tcv = 1.997 1. Calculate a 95% confidence interval estimating the true difference between the population means. Write the final answer in brackets [x.xx, x.xx]. 2. Based on your answer, explain whether there is a significant difference between the two population means. What about your answer tells you whether there is a significant difference or not? HTML Editor B I VA - A - IX EI x...
**************ALL OF THE PARTS ARE FROM ONE QUESTION.**************** **********ALL OF THE PARTS ARE FROM ONE QUESTION.*********** (a) The mathematical ability of a random sample of 306 students were...
**************ALL OF THE PARTS ARE FROM ONE
QUESTION.****************
**********ALL OF THE PARTS ARE FROM ONE
QUESTION.***********
(a) The mathematical ability of a random sample of 306 students were as- sessed by means of a test. The test regards the mathematical ability of the student as either: low, medium or high. The handedness of each subject (right-handed of left-handed) was also recorded. The data is pre- sented in the table below. Low MediumHigh Total Left-handed19 393391 1 215 74 306 114...
Assume for a moment that these 20 houses made up the entire population of houses in San Antonio. Use the Data Analysis...
Assume for a moment that these 20 houses made up the entire population of houses in San Antonio. Use the Data Analysis Sampling function to choose a random sample of 7 house prices from the population. Put a label called "Sample of 7" over the list you create. 4. 3. Highlight all the data, including both Square Footage and Price, and use the Insert Scatter function to create a Scatter Diagram. Change the title and add a linear trend line...
Please help me with what formulas to put in to get the right answers. I have...
Please help me with what formulas to put in to get the
right answers. I have tried but I am stuck not getting it... For
the first one I am only able to find a two paired t-test but there
is only one row so I don't know what to do...
SAT For a specific year, the national average score on the SAT Math test was 515. 496 A superintendent wishes to see if their students scored, on average, significantly...
Nine owners of Honda Odysseys in Richmond want to know if they get different gas mileage...
Nine owners of Honda Odysseys in Richmond want to know if they get different gas mileage with their cars than what the Honda Corporation reports. Honda of America states that all Honda Odysseys sold in America get an average of 28 MPG (miles per gallon) with a standard deviation of 2.16. The nine Honda owners drive their cars and record the MPG listed below. Use a single-sample z-test to determine the outcome (alpha = .05, two-tailed). Owner 1: 29 MPG...
how would i know which test i could use. is there a fabke perhaos where i could see which tests i could choose? Anova, t-Test, Regression, Correlation, U-Test,etc.... Mandaue Test Your Ski...
how would i know which test i could use. is there a fabke
perhaos where i could see which tests i could choose? Anova,
t-Test, Regression, Correlation, U-Test,etc....
Mandaue Test Your Skills Biometry Researchers collected data on the diameter at breast height (dbh) and flower production for male and female trees. These data are available in D2L for download. Please use that and do not try to type all of this in. # your turn maledbh <- c(171,187.274,285,182,133,133,267,216,185,183,264,83,242,235,242,267,190,284,228) maleflowers <...
if I could get some help with better understanding this unit of statistics and probability it...
if I could get some help with better understanding this unit
of statistics and probability it would be great. please and thank
you!
DeroW.9 HourS? 29 Determining sample size. Refer to the previous rcise. You want to use a sample size such that about 95% of the averages fall within 5 minutes (0.08 hour) of the true mean 6.78. (a) Based on your answer to part (b) in Exercise 28 should the sample size be larger or smaller than 120?...
According to the historical admissions of School of Administrative Studies (ADMS) at York-U, 35% of students...
According to the historical admissions of School of Administrative Studies (ADMS) at York-U, 35% of students chose Accounting as their major, 30% of students specialized in the Finance major, 15% of students registered in the Management stream, 8% of students majored in Marketing area, and the rest of students enrolled in other majors. Currently, the dean is randomly sampling a group of students from School of Administrative Studies (ADMS) and the table below summarizes the students' major specializations by genders....
bA sample of 150 snudents selected randomly from a population of students in college. Their ages are presented in the table below: Age (years) No. of students | 19-23 24-28 I 29-3-34-38 139-431 44-48 18ーー26-ェ49 34-6 7 A a -0.05, test the hypothesis that the sample mean is equal to the population mean 32 years. (7 Marks)
Using the results below: M1 = 18.57, M2 = 18.33, SM1-M2 = 0.97, tcv = 1.997 1. Calculate a 95% confidence interval estimating the true difference between the population means. Write the final answer in brackets [x.xx, x.xx]. 2. Based on your answer, explain whether there is a significant difference between the two population means. What about your answer tells you whether there is a significant difference or not? HTML Editor B I VA - A - IX EI x...
**************ALL OF THE PARTS ARE FROM ONE
QUESTION.****************
**********ALL OF THE PARTS ARE FROM ONE
QUESTION.***********
(a) The mathematical ability of a random sample of 306 students were as- sessed by means of a test. The test regards the mathematical ability of the student as either: low, medium or high. The handedness of each subject (right-handed of left-handed) was also recorded. The data is pre- sented in the table below. Low MediumHigh Total Left-handed19 393391 1 215 74 306 114...
Assume for a moment that these 20 houses made up the entire population of houses in San Antonio. Use the Data Analysis Sampling function to choose a random sample of 7 house prices from the population. Put a label called "Sample of 7" over the list you create. 4. 3. Highlight all the data, including both Square Footage and Price, and use the Insert Scatter function to create a Scatter Diagram. Change the title and add a linear trend line...
Please help me with what formulas to put in to get the
right answers. I have tried but I am stuck not getting it... For
the first one I am only able to find a two paired t-test but there
is only one row so I don't know what to do...
SAT For a specific year, the national average score on the SAT Math test was 515. 496 A superintendent wishes to see if their students scored, on average, significantly...
how would i know which test i could use. is there a fabke
perhaos where i could see which tests i could choose? Anova,
t-Test, Regression, Correlation, U-Test,etc....
Mandaue Test Your Skills Biometry Researchers collected data on the diameter at breast height (dbh) and flower production for male and female trees. These data are available in D2L for download. Please use that and do not try to type all of this in. # your turn maledbh <- c(171,187.274,285,182,133,133,267,216,185,183,264,83,242,235,242,267,190,284,228) maleflowers <...
if I could get some help with better understanding this unit
of statistics and probability it would be great. please and thank
you!
DeroW.9 HourS? 29 Determining sample size. Refer to the previous rcise. You want to use a sample size such that about 95% of the averages fall within 5 minutes (0.08 hour) of the true mean 6.78. (a) Based on your answer to part (b) in Exercise 28 should the sample size be larger or smaller than 120?...
According to the historical admissions of School of Administrative Studies (ADMS) at York-U, 35% of students chose Accounting as their major, 30% of students specialized in the Finance major, 15% of students registered in the Management stream, 8% of students majored in Marketing area, and the rest of students enrolled in other majors. Currently, the dean is randomly sampling a group of students from School of Administrative Studies (ADMS) and the table below summarizes the students' major specializations by genders....
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