11) A national health survey weighed a sample of 531 boys aged 6-11 and found that 86 of themwere overweight. They weighed a sample of 544 girls aged 6-11and found that 65 of them wereoverweight. Can you conclude that the proportion of boys who are overweight differs from theproportion of girls who are overweight? Use the 0.05 level of significance and the P-valuemethod.(a) State the appropriate null and alternate hypotheses.(b) Compute the P-value.(c) Determine whether to reject Null Hypothesis.d) State a conclusion.12

Given: For Boys: n1 = 531 X1 = 86 For Boys: n2 = 544 X2 = 65 α = 0.05 Formula Used: Test-statistic Z…

Answered: 11) A national health survey weighed 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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In a survey, 36% of the respondents stated that they talk to their pets on the telephone. A veterinarian believed this result to be too high, so he randomly selected 240 pet owners and discovered that 85 of them spoke to their pet on the telephone. Does the veterinarian have a right to be skeptical? Use the x = 0.1 level of significance. Because npo (1-P) = 55.3 > 10, the sample size is (Round to one decimal place as needed.) What are the null and alternative hypotheses? Ho: versus H₁: (Type integers or decimals. Do not round.) less than 5% of the population size, and the sample is given to be random, the requirements for testing the hypothesis are satisfied.
A manufacturer wants to test the claim that more than 5% of widgets coming of the manufacturing line are defective. In random sample of 1200 widgets it is found that 69 of those are defective. Use a significance level of 0.05 to test the manufacturers claim.
Past studies have indicated that the percentage of smokers was estimated to be about 34%. Given the new smoking cessation programs that have been implemented, you now believe that the percentage of smokers has reduced. You randomly surveyed 1708 people and found that 544 smoke. Use a 0.05 significance level to test the claim that the percentage of smokers has reduced.a) Identify the null and alternative hypotheses?H0H0: H1H1: b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? left-tailed right-tailed two-tailed c) Identify the appropriate significance level.d) Calculate your test statistic (Use ˆpp^ rounded to 4 decimal places). Write the result below, and round your test statistic to 4 decimal places.e) Calculate your p-value. Write the result below, rounded to four decimal places.f) Do you reject the null hypothesis? We reject the null hypothesis, since the p-value is less than the significance level. We reject the…
A researach is conducted to observe whether there is significant difference between theproportions of black and white drivers stopped by the police. Simple random samplesof drivers are analyzed and the results indicate that24 black drivers out of 200 and 147white drivers out of 1400 are stopped by the police. Use a 5% significance level to testthe claim that the proportion of black direvers stopped by the police is greater than theproportion of white drivers who are stopped.
According to a survey, 7 out of 100 children have food allergies. We want to test the claim that more than 4% of children have food allergies, using a significance level 0.05.
The US Department of Energy reported that 48% of homes were heated by natural gas. A random sample of 336 homes in Oregon found that 142 were heated by natural gas. Test the claim that proportion of homes in Oregon that were heated by natural gas is different than what was reported. Use a 10% significance level. Give answer to at least 4 decimal places. What are the correct hypotheses? (Select the correct symbols and use decimal values not percentages.) Based on the hypotheses, compute the following:Test Statistic = p-value =
Past studies have indicated that the percentage of smokers was estimated to be about 35%. Given the new smoking cessation programs that have been implemented, you now believe that the percentage of smokers has reduced. You randomly surveyed 2405 people and found that 799 smoke. Use a 0.05 significance level to test the claim that the percentage of smokers has reduced.a) Identify the null and alternative hypotheses?H0H0: H1H1: b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? left-tailed right-tailed two-tailed c) Identify the appropriate significance level.d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places.e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal places.f) Do you reject the null hypothesis? We reject the null hypothesis, since the p-value is less than the significance level. We reject the…
In a certain school district, it was observed that 29% of the students in the element schools were classified as only children (no siblings). However, in the special program for talented and gifted children, 130 out of 373 students are only children. The school district administrators want to know if the proportion of only children in the special program is significantly different from the proportion for the school district. Test at the a = 0.05 level of significance. What is the hypothesized population proportion for this test? P =0.34 (Report answer as a decimal accurate to 2 decimal places. Do not report using the percent symbol) Based on the statement of this problem, how many tails would this hypothesis test have? one-tailed test two-tailed test Choose the correct pair of hypotheses for this situation: (C) (В) (A) Ho: p 0.29 Ho:p 0.29 Ho:p 0.29 H p 0.349 Ha p (F) (E) 0.349 (A) (B) (C) (D) (E) (F) N a e W
In a random sample of 360 women, 63% favored stricter gun control laws. In a random sample of 220 men, 58% favored stricter gun control laws. Test the claim that the proportion of women favoring stricter gun control is higher than the proportion of men favoring stricter gun control. Use a significance level of 0.05.
11) A national health survey weighed a sample of 531 boys aged 6-11 and found that 86 of them were overweight. They weighed a sample of 544 girls aged 6-11and found that 65 of them were overweight. Can you conclude that the proportion of boys who are overweight differs from the proportion of girls who are overweight? Use the 0.05 level of significance and the P-value method. (a) State the appropriate null and alternate hypotheses. (b) Compute the P-value. Dr he (c) Determine whether to reject Null Hypothesis. ypeti d) State a conclusion.

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