**Exhibit 9-5**- \( n = 16 \)- \( \overline{x} = 75.607 \)- \( \sigma = 8.246 \)**Hypotheses:**- \( H_0: \mu \geq 80 \)- \( H_a: \mu < 80 \)Assume the population is normally distributed.---**Question:**18. Refer to Exhibit 9-5. If the test is done at a 2% level of significance, the null hypothesis should _____.Options:- ○ be rejected- ○ Not enough information is given to answer this question.- ○ not be rejected- ○ be tested again

Z statistic is uses because of sigma known

Answered: Exhibit 9-5 n = 16 HO: u z 80 x =…

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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I only need Answers of 9, 10, 11, 12, 13, 14, 15, 16
Test the claim about the population mean, µ, at the given level of significance using the given sample statistics. Claim: µ + 7000; a = 0.03; o = 410. Sample statistics: x = 6900, n = 35 Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: µ+ 7000 Ha: u В. Но: и3D7000 Ha: u#7000 = 7000 С. Но: и#7000 Ha: us7000 D. Ho: µ#7000 Ha: µ2 7000 Ο Ε. H :μ> 7000 Ha: µ#7000 O F. Ho: µs7000 Ha:µ#7000 Calculate the standardized test statistic. The standardized test statistic is - 1.44. (Round to two decimal places as needed.) Determine the critical value(s). Select the correct choice below and fill in the answer box to complete your choice. (Round to two decimal places as needed.) O A. The critical values are ± B. The critical value is
17. If the random variable Y has a chi-square distribution with 54 degrees of freedom, then what is the approximate 84t percentile of Y?
14) Assume that you want to test the claim that the paired sample data come from a population for which the mean difference is u, = 0. Compute the value of the t test statistic. Round %3D intermediate calculations to four decimal places as needed and final answers to three decimal places as needed. х 28 31 20 25 28 27 33 35 26 27 26 25 29 32 33 34 A) t =-1.480 B) t=-1.185 C) t = -0.523 D) t= 0.690 %3D
19) You are conducting a study to see if the proportion of voters who prefer Candidate A is significantly more than 0.53. Thus you are performing a right-tailed test. Your sample data produce the test statistic z=2.399z=2.399. Find the p-value accurate to 4 decimal places.p-value =
The population of all cans of Slurg Soda has an average of 12 ounces of soda per can. A manager randomly selects 45 cans of Sturg and finds an average of 12.1 ounces per can for this sample of cans. A distribution of 100 simulated sample statistics is shown below. 11.92 11.98 12 Sample means • What is the value of the sample statistic? Ор OI 12.04 Enter an integer or decimal number [more...] • Which symbol is used for the statistic in this situation? Ομ Оп A • Which of the following is an accurate statement? .O The average (mean) of the population of numbers is a 12.1. O The average (mean) of the population of numbers is = 12. O The average (mean) of the population of numbers is μ = 12. p O The average (mean) of the population of numbers is = 12.1. . Which of the following is the correct procedure to follow in order to identify the percentage of simulated statistics that are like theo m
A study is designed to determine the effect of an office-training course on typing productivity. Fifteen typists who have not taken the course are randomly selected. The investigator assigns 20 pages of equally difficult text to be typed by each typist both before and after completing the training course. The investigator wants to find out whether the training course has reduced the number of errors by more than 10. Define d = Before − After. Significance level What conclusion should we reach if the p-value is 0.113?
12.A sample of n = 16 scores has a mean of M = 65 and an estimated standard error of 2 points. What is the sample variance? s2 = 64 c. s2 = 16 а. b. s2 = 36 d.s? = 4
13. The sign of the alternative hypothesis in a two-tailed test is always A. C. greater than D. less than equal B. not equal 14. This hypothesis states that there is no difference between population parameters and the hypothesized value. A. hypothesis B. alternative hypothesis C. null hypothesis D. two-tailed hypothesis 15. "The ratings given by male and female students with regard to the online teaching skills of their teachers is the same." This statemen example what kind of hypothesis? A. one-tailed hypothesis B. alternative hypothesis C. null hypothesis D. two-tailed hypothesis 16. "The use of social media as modern approach of advertising will increase the demand for a new product." This is an exam __hypothesis. A. Mean B. null C. alternative D. two-tailed 17. Which is the correct alternative hypothesis for one-tailed test? A. µ = 25 B. µ # 25 C.µ ≥ 25 D. p < 25 18. Mrs. Nazareth conducted a research on the preference of residents of Mayapa in choosing their venue for occasions.…
2
suppose that a random sample of size 20 is taken from a normal distribution with unknown mean and known variance is equal to 1 and me is found to be 10 and normal distribution was used to as a prayer for the mean and it was found that the posterior maine was 15 and posterior standard aviation was 0.1 what is the mean and standard deviation for prior
3. It has been claimed that over 30 percent of entering college students have blood cholesterol levels of at least 200. Randomly select 20 students in the list in Table 1 to test this hypothesis. What conclusion do the 5 percent level of significance?

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