Homework Answers
a) because the value Ho:µ=30 is contained in all three of the given confidence intervals , you know that the two sided p value for testing Ho:µ=30 vs Ha:µ╪30 is greater than 0.10
b) option D)
Add Answer to:
The Odum Institute for Research in Social Science at the University of North Carolina made available...
The starting salaries of a random sample of three students who graduated from North Carolina State...
The starting salaries of a random sample of three students who graduated from North Carolina State University last year with majors the mathematical sciences are $45,000, $50,000, and $40,000. (Note: do not use $ symbols or commas in your answers.) (a) Report the sample statistic that can be used to estimate the population mean starting salaries of all math science graduates at that university last year. (whole number, no commas) (b) The margin of error for a 95% confidence interval...
The starting salaries of a random sample of three students who graduated from North Carolina State...
The starting salaries of a random sample of three students who graduated from North Carolina State University last year with majors in the mathematical sciences are $45,000, $50,000, and $40,000. (Note: do not use $ symbols or commas in your answers.) (a) Report the sample statistic that can be used to estimate the population mean starting salaries of all math science graduates at that university last year (whole number, no commas) (b) The margin of error for a 95% confidence...
3. Determine if the following statements are true or false, OR show what they claim where...
3. Determine if the following statements are true or false, OR show what they claim where asked (one point each): T F (a) If we sample from a population coming from a normal distribution with known mean, the sampling distribution of the sample mean will be normal, regardless of the sample size. (b) For a given p-value, if p sa we fail to reject the null. (c) Under a large sample, given a, a hypothesis test for the mean, Ho...
Do education programs for preschool children that follow the Montessori method perform better than other programs?...
Do education programs for preschool children that follow the Montessori method perform better than other programs? A study compared five-year-old children in Milwaukee, Wisconsin, who had been enrolled in preschool programs from the age of three. All the children in the study applied to the Montessori school. The school district assigned students to Montessori or other preschools by a random lottery. (a) Comparing children whose parents chose a Montessori school with children of other parents would not show whether Montessori...
6. A claim is made that college students spend 75% of their time on either sleeping...
6. A claim is made that college students spend 75% of their time on either sleeping or socializing. You do not believe this claim, and you set out to conduct a hypothesis test with the following hypotheses: Ho: p = 0.75 vs. Ha: p ≠ 0.75. If you gather data from a sample and compute a test statistic equal to -0.6, what would the p-value be? 7. Return to Question 6. The fact that the test statistic is negative tells...
A store owner surveyed 25 randomly selected customers and found the ages shown (in years). The...
A store owner surveyed 25 randomly selected customers and found the ages shown (in years). The mean is 32.36 and the standard deviation is 11.79. The owner wants to know f the mean age of all customers is 36 years old. Use the given information to complete parts a through . 14 12 18 22 16 42 48 44 28 40 41 3743 44 38 16 20 39 48 31 30 34 21 47 36 a) What is the null...
Suppose Diana, an educational researcher at a local university, wants to test the impact of a...
Suppose Diana, an educational researcher at a local university, wants to test the impact of a new Spanish course that integrates cultural-immersion teaching techniques with standard teaching practices. She selects a simple random sample of 72 freshmen and divides them into 36 pairs, matched on IQ and high school GPA. She randomly selects one member of each pair to take the new course, while the other member in the pair takes the traditional course. Next, Diana records the course grade,...
Hi all the answers are given on this worksheet I just need to know how to do part (e) and calcula...
Hi all the answers are given on this worksheet I just need to
know how to do part (e) and calculate the two numbers in my TI-84.
(I use my TI-84 to get z and p-value)
Problem 4: Two Proportions In 1995, the American Cancer Society randomly sampled 1500 adults of which 555 smoked. In 2005, they surveyed 1730 adults and ound that 578 of them smoked. At the 5% level of significance test the claim that the proportion of...
Math533 Keller graduate university Project B Complete the following four hypotheses, using α = 0.05 for...
Math533 Keller graduate university Project B Complete the following four hypotheses, using α = 0.05 for each. a. Mean sales for all stores is at least $52,000 b. Proportion of stores with a medium market size is less than 55% c. Mean sales for promotion #3 is more than $45,000 per week d. Mean store age is greater than 8 years. 1. Using the same data set from part A, perform the hypothesis test for each speculation in order to...
The MINITAB printout shows a test for the difference in two population means. Two-Sample T-Test and...
The MINITAB printout shows a test for the difference in two population means. Two-Sample T-Test and CI: Sample 1, Sample 2 Two-sample T for Sample 1 vs Sample 2 N Mean StDev SE Mean Sample 1 6 28.00 4.00 1.6 Sample 2 9 27.86 4.67 1.6 Difference = mu (Sample 1) - mu (Sample 2) Estimate for difference: 0.14 95% CI for difference: (-4.9, 5.2) T-Test of difference = 0 (vs not =): T-Value = 0.06 P-Value = 0.95...
The starting salaries of a random sample of three students who graduated from North Carolina State University last year with majors the mathematical sciences are $45,000, $50,000, and $40,000. (Note: do not use $ symbols or commas in your answers.) (a) Report the sample statistic that can be used to estimate the population mean starting salaries of all math science graduates at that university last year. (whole number, no commas) (b) The margin of error for a 95% confidence interval...
The starting salaries of a random sample of three students who graduated from North Carolina State University last year with majors in the mathematical sciences are $45,000, $50,000, and $40,000. (Note: do not use $ symbols or commas in your answers.) (a) Report the sample statistic that can be used to estimate the population mean starting salaries of all math science graduates at that university last year (whole number, no commas) (b) The margin of error for a 95% confidence...
3. Determine if the following statements are true or false, OR show what they claim where asked (one point each): T F (a) If we sample from a population coming from a normal distribution with known mean, the sampling distribution of the sample mean will be normal, regardless of the sample size. (b) For a given p-value, if p sa we fail to reject the null. (c) Under a large sample, given a, a hypothesis test for the mean, Ho...
Do education programs for preschool children that follow the Montessori method perform better than other programs? A study compared five-year-old children in Milwaukee, Wisconsin, who had been enrolled in preschool programs from the age of three. All the children in the study applied to the Montessori school. The school district assigned students to Montessori or other preschools by a random lottery. (a) Comparing children whose parents chose a Montessori school with children of other parents would not show whether Montessori...
A store owner surveyed 25 randomly selected customers and found the ages shown (in years). The mean is 32.36 and the standard deviation is 11.79. The owner wants to know f the mean age of all customers is 36 years old. Use the given information to complete parts a through . 14 12 18 22 16 42 48 44 28 40 41 3743 44 38 16 20 39 48 31 30 34 21 47 36 a) What is the null...
Suppose Diana, an educational researcher at a local university, wants to test the impact of a new Spanish course that integrates cultural-immersion teaching techniques with standard teaching practices. She selects a simple random sample of 72 freshmen and divides them into 36 pairs, matched on IQ and high school GPA. She randomly selects one member of each pair to take the new course, while the other member in the pair takes the traditional course. Next, Diana records the course grade,...
Hi all the answers are given on this worksheet I just need to
know how to do part (e) and calculate the two numbers in my TI-84.
(I use my TI-84 to get z and p-value)
Problem 4: Two Proportions In 1995, the American Cancer Society randomly sampled 1500 adults of which 555 smoked. In 2005, they surveyed 1730 adults and ound that 578 of them smoked. At the 5% level of significance test the claim that the proportion of...
Most questions answered within 3 hours.
-
Rice Products in Bangladesh
Business behavior is derived in large part from the basic cultural
environment...
asked 48 minutes ago -
The following base sequence is found for a mRNA fragment from
wild-type E. coli: 5'- UAUCAGUAGAUAAUGUAACC-3'...
asked 1 hour ago -
For this exercise, round all regression parameters to three
decimal places.
One of the two tables...
asked 1 hour ago -
What is the 5% level of significance for mean = 3.60, standard
deviation = 0.94, and...
asked 1 hour ago -
Prior to beginning work on this discussion, please read the
article by Hayley Peterson, 15 Companies...
asked 2 hours ago -
Which pair of aqueous solutions, when mixed, will form a
precipitate?
A) NaNO3 and AgC2H3O2
B)...
asked 2 hours ago -
1-Write an algorithm to get two numbers from the user (as
inputs) and calculate the sum...
asked 5 hours ago -
Define white-collar crime. What is the difference between
offender and offense-based definitions of white-collar crime? What...
asked 6 hours ago -
Consider a reaction which is 1st order with respect to A and 1st
order with respect...
asked 6 hours ago -
c++
The length of the hypotenuse of a right-angled triangle is the
square root of the...
asked 6 hours ago -
When a metal rod is heated, not only its resistance but also its
length and cross‐sectional...
asked 6 hours ago -
write a c++ program that computes the L^1 - Norm of a given
vector (L^1 norm...
asked 6 hours ago