From previous studies, it is concluded that 63% of peoplesupport stricter gun laws. A researcher claims it hasincreased and decides to survey 100 adults. Test theresearcher's claim at the a = 0.05 significance level.Preliminary:a. Is it safe to assume that n ≤ 0.05 of all subjects inthe population?NoYesb. Verify np (1 - p) > 10. Round your answer to onedecimal place.np (1 - p)Test the claim:=a. Express the null and alternative hypotheses insymbolic form for this claim.Ho: ?> ? ◇Ha: ? ? ◇b. After surveying 100 adult Americans, the researcherfinds that 27 people support stricter gun laws.Compute the test statistic. Round to two decimalplaces.x =c. What is the p-value? Round to 4 decimals.p =d. Make a decision based on a = : 0.05 significancelevel.O Do not reject the null hypothesis.Reject the null hypothesis.e. What is the conclusion?There is not sufficient evidence to support theclaim that 63% of people support stricter gunlaws has increased.There is sufficient evidence to support theclaim that 63% of people support stricter gunlaws has increased.

a) Yes b) Test the claim: a) There is not sufficient evidence to support the claim that 63% of…

Answered: From previous studies, it is concluded…

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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The pulse rates of 176 randomly selected adult males vary from a low of 40 bpm to a high of 116 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 95% confidence that the sample mean is within 2 bpm of the population mean.
When debating the state appropriation for Penn State, the following question is asked: "Are the majority of students at Penn State from Pennsylvania?" (A majority is anything higher than 0.5). The school claims that there is a majority of students from Pennsylvania. A random sample of 500 students is taken and it is found that 278 of them are from Pennsylvania. Find the test statistic and p-value for this test. Round to two decimal places.
According to a recent report, 46% of college student internships are unpaid. A recent survey of 80 college interns at a local university found that 51 had unpaid internships. b. Assume that the study found that 42 of the 80 college interns had unpaid internships and repeat (a). What is the test statistic? ZSTAT= (Round to two decimal places as needed.) What is the p-value? The p-value is (Round to three decimal places as needed.) What is the final conclusion?
A national survey reports that the average number of screens (TVs, computers, tablets, and smartphones) in a single-family household 9.5. You believe that average may be different in Hartsville. State the null and alternative hypothesis for the claim that the average number of screens per household in Hartsville is not 9.5. Select your answer from one of the following options. a. ?0:?≥9.5??:?<9.5 b. ?0:?=9.5??:?≠9.5 c. ?0:?>9.5??:?≤9.5 d. ?0:?≠9.5??:?=9.5 e. ?0:?≤9.5??:?>9.5
Suppose the null hypothesis is rejected. State the conclusion based on the results of the test. Six years ago, 11.4% of registered births were to teenage mothers. A sociologist believes that the percentage has increased since then. Which of the following is the correct conclusion? O A. There is sufficient evidence to conclude that the percentage of teenage mothers has remained the same. O B. There is sufficient evidence to conclude that the percentage of teenage mothers has increased. O C. There is not sufficient evidence to conclude that the percentage of teenage mothers has remained the same. O D. There is not sufficient evidence to conclude that the percentage of teenage mothers has increased.
A tube of listerine tartar control toothpaste 4.2 ounces. As people use the toothpaste the amount remaining in any tube is random. Assume the amount of toothpaste remaining in the tube follows a uniform distribution. What is the probability that there is more than 1.5 ounces remaining in the tube?
The null hypothesis and the alternate hypothesis are: H0: The frequencies are equal.H1: The frequencies are not equal. Category f0 A 10 B 10 C 20 D 10 a. State the decision rule, using the 0.01 significance level. (Round your answer to 3 decimal places.) b. Compute the value of chi-square. (Round your answer to 2 decimal place.) c. What is your decision regarding H0?
For a right sided, one-tailed test, the test statistic z is calculated to be zero. The p-value corresponding to this calculated test statistic is, a. 0.50 b. zero c. -0.50 d. 1.00
The school's newspaper reported that the proportion of students majoring in business is at least 30%. You plan on taking a sample to test the newspaper's claim. The correct set of hypotheses is Oa. Ho:p>.30 Ha: p ≤.30 O b. Ho: p .30 O d. Ho: p 2.30 Ha: p < .30
. A division-wide aptitude test in Mathematics was conducted to 1000 pupils. The mean of the test is 58 and the standard deviation is 12. The scores also approximate the normal population.a. What is [the minimum score to belong to the upper 10% of the group?
A survey claims that 8 out of 10 Filipino nurses use soap "clean" for handwashing. To verify this claim, a random sample of 100 Filipino nurses is obtained. Out of these 100 nurses, 58 said that they use soap X for handwashing. Test if the claim is accurate. The level of significance is set at 0.05. Ho: The proportion Filipino n v What are the appropriate null and alternative hypotheses for this problem? ( Select ) v What is the appropriate test statistic to be used for this problem? a. z=(p-P)/V(PQ/n) b. t=(7-u)/(s/Vn) C. z=-u)/(a/Vn) d. 7tt s/Vn ( Select ) What is the critical region? ( Select ) If the computed test statistics is -8.5, what is the appropriate conclusion for this problem?
Only about 14% of all people can wiggle their ears. Is this percent lower for millionaires? Of the 400 millionaires surveyed, 40 could wiggle their ears. What can be concluded at the a = 0.10 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Но: ? Select an answer V (please enter a decimal) H1: ? v Select an answer V (Please enter a decimal) c. The test statistic ? v (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 3 decimal places.) e. The p-value is ? v a f. Based on this, we should Select an answer g. Thus, the final conclusion is that ... the null hypothesis. O The data suggest the population proportion is not significantly lower than 14% at a = 0.10, so there is statistically insignificant evidence to conclude that the population proportion of millionaires who can wiggle their ears is lower than 14%. O The data suggest the populaton proportion is significantly lower…

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