The test statistic for a two tailed hypothesis test on a sample of 18 is 2.639. Find an interval for which the p-value lies.
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The test statistic for a two tailed hypothesis test on a sample of 18 is 2.639. Find an interval for which the p-value lies.
From the provided information,
Sample size (n) = 18
The test statistic is 2.639.
The test is two tailed.
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- Suppose that in a random selection of 100100 colored candies, 2323% of them are blue. The candy company claims that the percentage of blue candies is equal to 2222%. Use a 0.100.10 significance level to test that claim. What is the P-value for this hypothesis test is?Freshmen at public universities work 12.2 hours a week for pay, on average and the SD is 10.5 hours. At private universities, the average is 10.4 hours and the SD is 9.9 hours. Assume these data are based on two independent simple random samples, each of size 900. What is the p-value of the null hypothesis that average number of weekly works hours is the same between freshmen in public and private universities? Use a two-tailed test and choose the closest answer. a. 9.9% b. 0.02% c. 2.8% d. 88%A pipes manufacturer makes pipes with a length that is supposed to be 10 inches. A quality control technician sampled 39 pipes and found that the sample mean length was 10.05 inches and the sample standard deviation was 0.28 inches. The technician claims that the mean pipe length is not 10 inches. What type of hypothesis test should be performed? Select What is the test statistic? Ex: 0.123 What is the number of degrees of freedom? Ex: 20 Does sufficient evidence exist at the a = 0.05 significance level to support the Coloot v
- New York is known as “the city that never sleeps.” A random sample of 25 New Yorkers were asked howmuch sleep they get per night. Out of this sample, the man number of hours of sleep was 7.73 hours, with astandard deviation of 0.77 hours.Perform a hypothesis test at the α = 0.05 significance level to determine if this provides sufficient evidencethat the average New Yorkers sleeps less than 8 hours per night. b) State the null and alternative hypotheses symbolically.c) Which test procedure (z- or t-) is appropriate to perform the required hypothesis test? What do weneed to know in order to use this test?d) Compute the value of the test statistic.e) Determine the P-value. Please round your P-value to three decimal places.f) Should you reject the null hypotheses or not?A random sample of 865 births included 429 boys. Use a 0.01 significance level to test the claim that 51.3% of newborn babies are boys. Do the results support the belief that 51.3% of newborn babies are boys? Identify the P-value for this hypothesis test. The P-value for this hypothesis test isSuppose 218 subjects are treated with a drug that is used to treat pain and 52 of them developed nausea. Use a 0.10 significance level to test the claim that more than 20% of users develop nausea. Identify the null and alternative hypotheses for this test. The test statistic for this hypothesis test is? The P-value for this hypothesis test is? Identify the conclusion for this hypothesis test.
- A tire producer wants to test whether the mean diameter of the tires produced on a given day equals 36 inches. Whether the mean diameter is less than 36 is of little or no importance, but it is important for the firm to determine whether or not the mean diameter is more than 36 inches. The firm chooses a random sample of 49 tires, and find that their mean diameter is 36.4 inches and the sample standard deviation is 0.8 inches. Should the firm accept the hypothesis that the mean diameter is 36 inches? Use alpha = 0.05. What is the null hypothesis? What is the alternative hypothesis? What distribution are you using? What test are you running? What is your conclusion?If the test statistic is 1.95 on the Z distribution at a 3% significance level for a right-sided test, what is the conclusion? O Not enough information to make a conclusion. O Reject the null hypothesis. O Fail to reject the null hypothesis. 3 !! SAMSUNGIf a sample of 40 individuals was taken from a population with a mean of 110 and a standard deviation of 10, what is the Z-score for a one-tailed hypothesis test at a significance level of 0.01 if the sample mean is 112?
- 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 century ago, the average height of adult women in the United States was 63 inches. Researchers believe that the average might be greater today. A random sample of 40 adult women was selected from the population. The sample had mean 64.2 inches and standard deviation 2.9 inches. Assuming all conditions for inference are met, the researchers will perform an appropriate hypothesis test to investigate their belief. Which of the following is the correct test statistic for the hypothesis test? A t = 63-64.2 2.9 63-64.2 2.9 t 3= 63-64.2 29 40 64.2-63 t 3= 2.9 64.2-63 t = 2.9 US 1 DELL 么 & %24 %23 || E.The average GPA for all college students in the United States as of 2006 was 3.11. We want to test to see if the GPA of students at Texas A&M is higher than the national average. Suppose we survey 47 randomly selected students at Texas A&M and the average GPA is 3.27, with a standard deviation of 0.54. Assuming all conditions are met, conduct a hypothesis test at the 0.01 significance level. Which of the following below best describes the p-value? p-value = 0.9788. 0.04 < p-value < 0.05. p value = 0.0424. 0.02 < p-value < 0.025. p-value = 0.0212.
