If the alternate hypothesis were modified in this problem to be atwo-sided test using a not equal to symbol in the alternativehypothesis, and the test statistic turned out to be z = 2.24, thenwhat is the p-value?0.03460.01250.02500.0288wwwSLJUN23all A

Answered: If the alternate hypothesis were…

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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Q10. A Random Variable X has an unknown distribution, a known mean of 10 and an unknown variance, oʻ. To test a claim that the distribution is no longer 10, a random sample of 100 of X was collected which gave a sample mean, x of 9.8 and a sample variance, s? = 16. What is the hypothesis testing decision based on this data? A. Reject the Null: x = 10. C. Don’t Reject the Null: µ = 10. B. Don't reject the Null: x = 10 %3D D. Reject the Null: µ = 10. O A. A В. В ОС. С O D. D
It has been claimed that 71% of all adults use their cell phones within an hour of going to bed. Believing this claimed value is too low, a researcher surveys a large random sample of adults and obtains a test statistic of 0.5. What will the P-value be? Between 0.01 and 0.05 O There is not enough information available in the problem to determine the P-value. Larger than 0.10 Between 0.05 and 0.10 O Less than 0.01
It has been claimed that 17% of all adults visit a movie theater at least once per month. Believing this claimed value is too low, a researcher surveys a large random sample of adults and obtains a test statistic of 1.9. What will the P-value be? O Between 0.01 and 0.05 O Between 0.05 and 010 O Less than 0.01 O Larger than 0.10 O There is not enough information available in the problem to determine the P-value.
What is the value of the sample variance (s2), given that the S. E. Mear/S. E.g = 8.87403, and n = 28? [Apakah nilai varians sampel (s²), bagi S.E. Mir/S. E.3 = 8.87403, dan n = 28?]
What conclusion would be appropriate for an upper-tailed chi-squared test in each of the following situations? USE SALT (a) a = 0.05, df = 4, x² = 13.25 O We would reject Ho. O We would fail to reject Ho. (b) a = 0.01, df = 3, x² = 8.55 We would reject Ho. O We would fail to reject Ho. (c) a = 0.10, df = 2, x² = 4.36 We would reject Ho. O We would fail to reject Ho. (d) a = 0.01, k = 6, x² = 12.80 O We would reject Ho. O We would fail to reject Ho.
If your null and alternative hypothesis are:�0:�=0.77�1:�≠0.77Then the test is: left tailed right tailed two tailed
65 homeless people in San Jose were asked their age. The sample mean age was 33.2 years. Let x be a random variable representing ages of homeless people in San Jose. Assume that x has a normal distribution and o = 7.3 years. Do the data indicate that the mean age of the population of homeless people in San Jose is less than 35 years old? Use a = 0.05. Identify the following in your answer. 1. Identify the null hypothesis Ho and alternate hypotheses H, for the problem. 2. Identify the sample statistic, test statistic, p-value and calculator key used: Sample Statistic (sample mean) (Stated in problem) = Test Statistic (z) (Round to two decimal places) %3D P-value: (Round to four decimal places) = Calculator key used: 3. Identify the significance level and determine if you reject or fail to reject the null hypothesis. significance level = Do you reject or fail to reject Ho ? 4. State your conclusion. Upload your answer. Remember you can only upload one document. Upload Choose a File
A student was analyzing a data set that was Normally distributed with a mean of . She calculated the z-score of a score z in the data set and looked up this value on a z-table (the same z-tables we have been using in class). The table gave a value of 0.4918 in this instance. Which of the following statements is true. O Any score in this data set has a 49.18% chance of being between 2 and z. O The score has a probability of 49.18. O The standard deviation of this data set is 0.4918 O The score x is 0.4918 standard deviations away from the mean.
How were the answers of 0.0344, 0.4656, 0.1470, and 0.1470 attained?
In a study of abstract reasoning, a sample group of male female students scored as shown below on a test of abstract reasoning: Sex Male Female Sample Size 95 83 Mean 29.21 30.92 Standard Deviation 11.56 7.81 Assuming that our samples are random, would further testing of similar groups of male and female students give virtually the same result. Use alpha equal to 0.10
Under what circumstances is a t statistic used instead of a z-score for a hypothesis test? Justin wants to know whether a commonly prescribed drug does improve the attention span of students with attention deficit disorder (ADD). He knows that the mean attention span for students with ADD who are not taking the drug is 2.3 minutes long. His sample of 12 students taking the drug yielded a mean of 4.6 minutes. Justin can find no information regarding σx , so he calculated s2x =1.96. Determine the critical region using a one-tailed test with alpha = .05. Conduct the hypothesis test (Do the math and compare the t-critical and t-obtained values). State your conclusions in terms of H0 (Should you reject the H0 or fail to reject/accept the H0). Based on your analysis, is there a relationship between the drug and attention span?

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If the alternate hypothesis were modified in this problem to be a two-sided test using a not equal to symbol in the alternative hypothesis, and the test statistic turned out to be z = 2.24, then what is the p-value? 0.0346 0.0125 0.0250 0.0288