Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value t,12, (b) find the critical value z,r12, or (c) state that neither the normal distribution nor the tdistribution applies.Here are summary statistics for randomly selected weights of newborn girls: n = 195, x= 28.4 hg, s= 7.6 hg. The confidence level is 95%.Select the correct choice below and, if necessary, fill in the answer box to complete your choice.A.ta/2 =(Round to two decimal places as needed.)%3DB.Za/2 =(Round to two decimal places as needed.)%3DC. Neither the normal distribution nor the t distribution applies.

The summary statistics for randomly selected weights of new-born girls is provided as; The…

Answered: Assume that we want to construct a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Assume that we want to construct a confidence interval. Do one of the following, as appropriate: Find the critical value ta/2 Find the critical value za/2 State that neither the normal distribution nor the t distribution applies. The confidence level is 95%, o is not known, and the histogram of 58 player salaries (in thousands of dollars) of football players on a team is as shown. 40- 30- 20- 10- 8000 Salary (thousands of dollars) 16000 4000 12000 2000 А. Za/2 = 1.67 В. ta/2 = 2.66 C. ta/2 = 2.00 D. Neither the normal distribution nor the t distribution applies. Frequency
Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
A statistics class is estimating the mean height of all female students at their college. They collect a random sample of 42 female students and measure their heights. The mean of the sample is 65.3 inches and the sample standard deviation is 5.4 inches. Find the 90% confidence interval for the mean height of all female students in their school? Assume that the distribution of individual female heights at this school is approximately normal. 1. The t value is 1.3025 2. The standard error has a value of -- 3. The margin of error has a value of 4. Find the 90% confidence interval for the mean height of all female students in their school
Can you do this problem?
I collect a random sample of size n from a population and from the data collected compute a 90% confidence interval for the mean of the population. Which of the following would produce a wider confidence interval, based on these same data? Use a larger confidence level. Use a smaller confidence level. a b.
Construct the indicated confidence interval for the population mean u using the t-distribution. Assume the population is normally distributed.c=0.95, x=14.6, s=2.0, n=5
K Large samples of women and men are obtained, and the hemoglobin level is measured in each subject. Here is the 95% confidence interval for the difference between the two population means, where the measures from women correspond to population 1 and the measures from men correspond to population 2: -1.76 g/dL
A developmental psychologist believes that children’s self-esteem scores change with age. She measures N=8 children’s self-esteem in 3rd grade and again in 6th. Evaluate the results of her data using α = .052tail. **Attached Image** a. Show how the 95% confidence interval was calculated. b. State the conclusion in APA format. c. What is Cohen’s d?
e19
Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed. c=0.95, x=13.9, s=0.65, n=12
Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value 2. (b) find the critical value 12. or (c) state that neither the normal distribution nor the t distribution applies. 30 40 The confidence level is 99%, a is not known, and the histogram of 58 player salaries (in thousands of dollars) of footbal players on a team is an shown 20 10 4000 so00 120o0 16000 20do0 Salery (tond of dola) Select the correct choice below and, if necessary, tal in the answer box to complete your choice. OA uz (Round to two decimal places an needed.) OB. (Round to two decimal places as needed.) OC. Neither the normal distribution nor the t distribution applies. Aouenbe4
Construct the indicated confidence interval for the population mean y using the t- distribution. Assume the population is normally distributed. C=0.99, x=12.6, s= 0.81, n=17

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