QUESTION 8A statistics student randomly selected 45 packets of sugar and weighed the contents of each packet, getting a mean of3.586 g and a standard deviation of 0.194 g. Test the claim that the weights of the sugar packets have a mean no longerequal to 3.5 g, as indicated on the label. Let "alpha" be 0.10 to test this claim.What is the decision/summary statement for this test?OA Reject the Null Hypothesis. There is enough evidence to support the claim that the sugar packets have a mean nolonger equal to 3.5 grams.O B. Reject the Null Hypothesis. There is enough evidence to reject the claim that the sugar packets have a mean nolonger equal to 3.5 grams.O. Do not reject the Null Hypothesis. There is not enough evidence to reject the claim that the sugar packets have amean no longer equal to 3.5 grams.OD. Do Not Reject the Null Hypothesis. There is not enough evidence to support the claim that the sugar packets have amean no longer equal to 3.5 grams.QUESTION 9Among 200 randomly selected Internet users, it was found that 89 of them use the Internet for making travel plans. Use asignificance level of alpha equal to 0.01 to test the claim that at least 50% of Internet users use it for making travel plans.What are the hypotheses?OA Ho: p 2 0.445H.n<0 445Click Save and Submit to save and submit. Click Save All Answers to save all answers.P Type here to search4-4+13ORF10PriscF12Insert234.8%3DERTTYUP

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Answered: A statistics student randomly selected…

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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Find Test Statistic, P value, and Z score.
Q1. Students in a primary school are being tested to see how good their fine motor skills are. The teachers need to order some new equipment so they need an idea of the dexterity of the students. Using a standard dexterity test points, which are normally distributed with a population mean of 14 points and standard deviation of 4.6 points. If a randomly selected individual takes the test, what is the probability that the person will make more than 15 points? Q2: According to the American Automobile Association (AAA), the average cost of a gallon of regular unleaded fuel at gas stations in August 2010 was $2.58. Assume that the standard deviation of such costs is $0.15. Suppose that a random sample of n = 100 gas stations is selected from the population and the cost per gallon of regular unleaded fuel is determined for each. What is the approximate probability that the sample has a mean fuel cost that exceeds $2.7 and between $2 and $3? Q3. The lengths of stay (in days) for 100…
I need the answer as soon as possible
In high school X, approximately 9 percent of the students saw a certain movie on opening night. From a random sample of 200 students from high school Y, 22 saw the movie on opening night. Consider a hypothesis test to investigate whether the proportion of all students in high school Y who saw the movie on opening night is greater than that of high school X. Which of the following is the standard deviation used to calculate the test statistic for the one-sample zz-test?
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
The state of CT claims that the average time on death row is 15 years. A random survey of 75 death row inmates revealed that the average length of time on death row is 16.6 years with a standard deviation of 5.8 years. Conduct a hypothesis to test the state of CT's claim. t test mean two tail test p value = ____________ What is the decision?
The mean voltage and standard deviation of 10 batteries from each manufacturer were measured. The results are summarized in the following table. Manufacturer Sample mean voltage (millivolts) Sample standard deviation (millivolts) A 136 3 B 132 5 What type of hypothesis test should be performed? What is the test statistic? What is the number of degrees of freedom? Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the α=0.1 significance level?
An online survey company claims their surveys take on average less than 20 minutes to complete. Before running a new ad campaign, they need data to prove that the average completion time is actually less than 20 minutes. The company randomly samples 15 surveys taken in the last week and found a sample mean of 17 minutes with a sample standard deviation of 5 minutes. What is the alternative hypothesis of this test. Be sure to include symbol and number needed to form the hypothesis. HA : µ Find the test statistic for this test. (round answer to 3 decimal places) Find the p-value for this test. (round answer to 3 decimal places)
I confused on how to find the u (with a tail) as well as the batch acceptance probabability and standard deviation.
Which hypotheses can be used to perform the test in the following scenario?The mean lasting time of two competing floor tiles, type 1 and 2, are to be compared. Sixteen floors are randomly assigned to test each type of floor tile. Both populations have normal distributions with known standard deviation. Select the correct answer below: H0:μ1=μ2; Ha:μ1≠μ2 H0:μ1=μ2; Ha:μ1<μ2 H0:μ1=μ2; Ha:μ1>μ2 H0:μ1≤μ2; Ha:μ1>μ2 H0:μ1≠μ2; Ha:μ1=μ2

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