A random sample of 831 births included 433 boys. Use a 0.10 significance level to test the claim that 50.8% of newborn babies are boys. Do the results support the belief that 50.8% of newbrn babies are boys? Identify H0 and H1. Identify the test statistic for this hypothesis test. identify the p-value. Identify the conclusion for this hypothesis test. Do the results support the belief that 50.8% of newborn babies are boys?
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A random sample of 831 births included 433 boys. Use a 0.10 significance level to test the claim that 50.8% of newborn babies are boys. Do the results support the belief that 50.8% of newbrn babies are boys? Identify H0 and H1. Identify the test statistic for this hypothesis test. identify the p-value. Identify the conclusion for this hypothesis test. Do the results support the belief that 50.8% of newborn babies are boys?
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- What is meant by the sample space of an experiment?The drug Ritalin is designed to stimulate the central nervous system. In a random sample of 252 boys aged ten – twelve years old, it was found that 44 of the boys were taking Ritalin. It is known that the proportion of all boys aged 13 – 15 who take Ritalin is 24%. A researcher claims that the population proportions of boys who take Ritalin aged 10 – 12 is different than boys aged 13 – 15. Can you support this claim at the 5% significance level? a. Conduct a hypothesis test to test the claim at the 5% significance level. Be sure to state you Ho and Ha, your test statistic and p-value, whether or not you reject Ho and whether you support the claim. b. Show that you can use the large sample methodology. c. Write a complete sentence describing what a Type I error is in context.In the previous year, 40% of women over the age of fifty had regularly scheduled mammograms. Following last year's test, a campaign was initiated to encourage women to be tested regularly. This year, a cancer research group surveys a random sample of 450 women, and 195 respond affirmatively. With a 5% significance level, test to see if the campaign was effective. What is the null hypothesis? options: H0: μ ≤ 0.4 H0: μ ≥ 0.4 H0: p ≠ 0.4 H0: p ≥ 0.4 H0: p ≤ 0.4 H0: μ ≠ 0.4 None of these.
- Determine whether the alternative hypothesis is supported at a 0.05 significance level. would B be correct?A sample poll of 500 voters from Michigan and 300 voters from Wisconsin showed that 51% and 49% is in favor of Donald Trump, respectively. At a significance level of 0.05, and using two-tailed test: a.) What should be the good hypotheses? b.) What is the t-value/z-value? c.) Is there is a difference between the two states?According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in 2007 were for identity theft. In that year, Alaska had 321 complaints of identity theft out of 1,432 consumer complaints ("Consumer fraud and," 2008). Does this data provide enough evidence to show that Alaska had a lower proportion of identity theft than 23%? Test at the 5% level. viii) Comparing p-value and α value, which is the correct decision to make for this hypothesis test? A. Reject H B. Fail to reject Ho C. Accept Ho D. Accept HA Enter letter corresponding to correct answer. (ix) Select the statement that most correctly interprets the result of this test: A. The result is statistically significant at .05 level of significance. Evidence supports the claim that the proportion of complaints due to identity theft in Alaska is less than 23%. B. The result is statistically significant at .05 level of significance. There is not…
- A magazine reported that 47% of Canadians are confident they will take a winter vacation at some point between December through March. To test the magazine's claim, a random sample of 65 Canadians is taken and 27 of them said they are confident they will take a winter vacation at some point between December through March. At 5% significance level do the sample data provide sufficient evidence to support that the actual percentage is smaller than what the magazine reported? A. What are the null and alternative hypotheses?(Type "mu" for the symbol μ, "xbar" for the symbol x¯, "p" for the symbol p, or "phat" for the symbol ?̂ p^, e.g. mu > 0.5 for the mean is greater than 0.5, xbar < 0.5 for the sample mean is less than 0.5, p not = 0.5 for the proportion is not equal to 0.5, phat = 0.5 for the sample proportion is equal to 0.5.Percentages should be provided as values between 0 and 1. Please do not include units.) H0 = Ha = B. What is the test statistic value? (Include as many…A well-known brokerage firm executive claimed that at least 90% of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that in a sample of 800 people, 88% of them said they are confident of meeting their goals. What practical conclusion can we make about the claim? What would be our formal conclusion if we used a 0.01 significance level?In a study of the accuracy of fast food drive-through orders, one restaurant had 31 orders that were not accurate among 399 orders observed. Use a 0.01 significance level to test the claim that the rate of inaccurate orders is equal to 10%. Does the accuracy rate appear to be acceptable? Identify the null and alternative hypotheses for this test. Choose the correct answer below. A. H0: p=0.1 H1: p>0.1 B. H0: p=0.1 H1: p<0.1 C. H0: p=0.1 H1: p≠0.1 D. H0: p≠0.1 H1:p= Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is _____ (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is ____ (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test. A. Reject H0. There is sufficient evidence to warrant rejection of the claim that the rate of inaccurate orders is equal to 10%.…
- In a study of the accuracy of fast food drive-through orders, one restaurant had 34 orders that were not accurate among 378 orders observed. Use a 0.05 significance level to test the claim that the rate of inaccurate orders is equal to 10%. Does the accuracy rate appear to be acceptable? Identify the null and alternative hypotheses for this test. Choose the correct answer below. A. H0: p≠0.1 H1: p=0.1 B. H0: p=0.1 H1: p>0.1 C. H0: p=0.1 H1: p≠0.1 Your answer is correct. D. H0: p=0.1 H1: p<0.1 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is negative 0.65−0.65. (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is ---? (Round to three decimal places as needed.)In a study of the accuracy of fast food drive-through orders, one restaurant had 33 orders that were not accurate among 389 orders observed. Use a 0.05 significance level to test the claim that the rate of inaccurate orders is equal to 10%. Does the accuracy rate appear to be acceptable? Identify the null and alternative hypotheses for this test. Choose the correct answer below. A. H0: p=0.1 H1: p<0.1 B. H0: p=0.1 H1: p>0.1 C. H0: p≠0.1 H1: p=0.1 D. H0: p=0.1 H1: p≠0.1 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is nothing. (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is nothing. (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test. A. Fail to reject H0. There is sufficient evidence to warrant rejection of the claim that the rate of…In a study of the accuracy of fast food drive-through orders, one restaurant had 37 orders that were not accurate among 320 orders observed. Use a 0.10 significance level to test the claim that the rate of inaccurate orders is equal to 10%. Does the accuracy rate appear to be acceptable? Identify the null and alternative hypotheses for this test. Choose the correct answer below. A. H0: p≠0.1 H1: p=0.1 B. H0: p=0.1 H1: p<0.1 C. H0: p=0.1 H1: p≠0.1 Your answer is correct. D. H0: p=0.1 H1: p>0.1 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is ______ (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is _______ (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test. A. Reject H0. There is not sufficient evidence to warrant rejection of…