Vn• The p-value is the area under the curve to the right of the value of the test statistic.Student's t DistributionStep 1: Enter the number of degreesof freedom.Step 2: Select one-tailed or two-tailed.03O One-tailedO Two-tailedStep 3: Enter the test statistic.(Round to 3 decimal places.)0.2Step 4: Shade the area represented bythe p-value.0.1HStep 5: Enter the p-value.(Round to 3 decimal places.)-3-2 An important measure in the study of contagious infectious diseases is the number of cases directly generated by one previous case. Ashley is an epidemiologiststudying the spread of an infectious disease in her country. She claimed that the mean number of cases directly generated by one previous case is now greaterthan 2.6. A study of 18 randomly selected cases of the disease is conducted and finds the sample mean number of cases directly generated by one previouscase to be 3.1 with a sample standard deviation of 1.1. Assume that the population of the number of cases directly generated by one previous case isapproximately normally distributed.Complete the parts below to perform a hypothesis test to see if there is enough evidence, at the 0.05 level of significance, to support the claim that µ, the meannumber of cases directly generated by one previous case, is greater than 2.6.(a) State the null hypothesis H, and the alternative hypothesis H, that you would use for the test.H: 0OSOO

We have given that Population mean = 2.6Sample mean = 3.1 Sample standard deviation = 1.1 Sample…

Answered: Complete the parts below to perform 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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Big fish: A sample of 150 flounder of a certain species have sample mean weight 23.5 grams. Scientists want to perform a hypothesis test to determine how strong the evidence is that the mean weight differs from 22 grams. State the appropriate null and alternate hypotheses. The null hypothesis is H:H (Choose one) ▼ The alternate hypothesis is H :p(Choose one) v
After asking a sample of her students for their opinion of her class, the statistics professor calculates the test statistic z = 2.69 for the hypothesis test H: p = 0.80 H: p > 0.80, where p is the proportion of all students in the class who enjoyed the class. Which of the following is true? a The P-value is .9964 and conclude that more than 80% of the students enjoyed her class. b The P-value is .0036 and conclude that more than 80% of the students enjoyed her class. c The P-value is .9964 and conclude that less than 80% of the students enjoyed her class. d The P-value is .0036 and conclude that less than 80% of the students enjoyed her class.
The FDA regulates that fish that is consumed is allowed to contain 1 mg/kg of mercury. In Alaska, bass fish were collected in 36 different lakes to measure the amount of mercury in the fish. Do the data provide enough evidence to show that the fish in Alaska lakes has more mercury than the allowable amount? Below, set up the Null Hypothesis Ho and the Alternative Hypothesis HA. Ho: H (? HẠ: H (?
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Use technology to find the P-value for the hypothesis test described below. The claim is that for 12 AM body temperatures, the mean is p< 98.6°F. The sample size is n = 7 and the test statistic is t= - 1.321. P-value = (Round to three decimal places as needed.) Enter your answer in the answer box. 00 20 F3 esc F6 F7 F8 F9 F10 F1 F2 F4 F5 & 9. %24
The average final exam score for the statistics course is 78%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is higher. The final exam scores for the 13 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 90, 84, 93, 77, 95, 79, 82, 70, 85, 70, 83, 100, 90 What can be concluded at the the a = 0.05 level of significance level of significance?
A null and alternative hypothesis are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. Ho: H 3 7.2 H3: 7.2 What type of test is being conducted in this problem? O A. Right-tailed test O B. Left-tailed test OC. Two-tailed test
The P-value for a hypothesis test is shown. Use the P-value to decide whether to reject Ho when the level of significance is (a) a = 0.01, (b) a = 0.05, and (c) a = 0.10. P= 0.0158 (a) Do you reject or fail to reject Ho at the 0.01 level of significance? O A. Reject H, because the P-value, 0.0158, is greater than a = 0.01. O B. Fail to reject H, because the P-value, 0.0158, is greater than a = 0.01. O C. Fail to reject Ho because the P-value, 0.0158, is less than a = 0.01. O D. Reject Ho because the P-value, 0.0158, is less than g = 0.01. (b) Do you reject or fail to reject Ho at the 0.05 level of significance?
The following hypothesis test is to be conducted. Ho: Median ≤ 190 H₂: Median > 190 A sample of 30 provided 22 observations greater than 190, 3 observations equal to 190, and 5 observations less than 190. Use α = 0.01. Find the value of the test statistic. (Round your answer to two decimal places.) z = 2.56 X Find the p-value. (Round your answer to four decimal places.) p-value = 0.0052 X What is your conclusion? Reject Ho. The population median is less than or equal to 190. Do not reject Ho. The population median is less than or equal to 190. Reject Ho. The population median is greater than 190. Do not reject Ho. The population median is greater than 190.
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