A phone company plans on offering their new smartphone in four colours: white, black,silver and rose gold. They anticipate that 30% of shoppers will prefer white, 35% willprefer black, 20% will prefer silver and 15% will prefer rose gold. They perform marketresearch by asking a random sample of 350 potential customers which colour theyprefer.ColourFrequencyWhite104Chi Square ribution TableBlack127SAMSUNGCan the company conclude that their expected distribution was accurate using a 1%level of significance?Silver89SUBMIT QUESTIONRose GoldВОSAVE PROGRESSSUBMIT ASSIGNMENT10:16 A a. Calculate the test statistic.x² =Round to two decimal places if necessaryb. Determine the critical value(s) for the hypothesis test.c. Conclude whether to reject the null hypothesis or not based on the test statistic.RejectLO SearchSAMSUNGSUBMIT QUESTIONSAVE PROGRESSSUBMIT ASSIGNMENTS&D10:16

Given that, a phone company plans on offering their new smartphone in four colours: white, black,…

Answered: a. Calculate the test statistic. x²…

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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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= 0.1089 (a) Do you reject or fail to reject Ho at the 0.01 level of significance? O A. Reject Ho because the P-value, 0.1089, is greater than a= 0.01. O B. Reject H, because the P-value, 0.1089, is less than a= 0.01. O C. Fail to reject Ho because the P-value, 0.1089, is less than a = 0.01. D. Fail to reject Ho because the P-value, 0.1089, is greater than a = 0.01. (b) Do you reject or fail to reject Ho at the 0.05 level of significance? O A. Fail to reject Ho because the P-value, 0.1089, is greater than a = 0.05. 0.05. O B. Reject H, because the P-value, 0.1089, is greater than O C. Fail to reject Ho because the P-value, 0.1089, is less than a = 0.05. O D. Reject H, because the P-value, 0.1089, is less than a = 0.05.
dentify the type I error and the type II error for a hypothesis test of the indicated claim. The percentage of households with more than 1 pet is less than 65%. Identify the type I error. Choose the correct answer below. A. Reject the null hypothesis that the percentage of households with more than 1 pet is less than 65% when it is actually true. B. Fail to reject the null hypothesis that the percentage of households with more than 1 pet is less than 65% when it is actually false. C. Reject the null hypothesis that the percentage of households with more than 1 pet is greater than or equal to 65% when it is actually true. D. Fail to reject the null hypothesis that the percentage of households with more than 1 pet is greater than or equal to 65% when it is actually false. Identify the type II error. Choose the correct answer below. A. Fail to reject the null hypothesis that the percentage of households with more than 1 pet is greater…
a. Identify the null and alternative hypotheses for this test. Choose the correct answer below. b. Identify the test statistic for this hypothesis test. c. The P-value for this hypothesis test is d. Identify the conclusion for this hypothesis test.
What are the two decisions that you can make from performing a hypothesis test? What are the two decisions that you can make from performing a hypothesis test? Select all that apply. A. reject the alternative hypothesis B. make a type I error C. accept the alternative hypothesis D. reject the null hypothesis E. accept the null hypothesis F. fail to reject the alternative hypothesis G. fail to reject the null hypothesis H. make a type II error
What are the two decisions that you can make from performing a hypothesis test? What are the two decisions that you can make from performing a hypothesis test? Select all that apply. O A. reject the null hypothesis O B. accept the alternative hypothesis O C. accept the null hypothesis O D. fail to reject the alternative hypothesis O E. reject the alternative hypothesis O F. fail to reject the null hypothesis OG. make a type I error O H. make a type Il error
Consider the following hypothesis test. H0: ? ≥ 55 Ha: ? < 55 A sample of 36 is used. Identify the p-value and state your conclusion for each of the following sample results. Use ? = 0.01. NEED P-VALUE FOR THE FOLLOWING (a) x = 53 and s = 4.7 the test statistic. (Round your answer to three decimal places.) -2.553 Find the p-value. (Round your answer to four decimal places.)p-value = (b) x = 56 and s = 6.0 the test statistic is 1 Find the p-value. (Round your answer to four decimal places.)p-value =
A dentist wondered if his appointments were distributed evenly from Monday to Friday each week. He took a random sample of 500 appointments and recorded which day of the week they were booked for. His results are: Day Appointment Frequency Monday Search 104 Chi Square Distribution Table MA Tuesday 118 Wednesday 119 Thursday 2 The dentist would like to use these results to conduct a x² goodness-of-fit test to determine if the distribution of appointments agrees with an even distribution using a 0.5% level of significance. SUBMIT QUESTION 94 Friday SAVE PROGRESS 65 SUBMIT
A formula that provides the evidence against a null hypothesis is called: A. Test-statistic B. Population statistic C. Both a and b D. Neither a or b
Researchers conducted an experiment to test the effects of alcohol. Errors were recorded in a test of visual and motor skills for a treatment group of 23 people who drank ethanol and another group of 23 people given a placebo. The errors for the treatment group have a standard deviation of 2.40, and the errors for the placebo group have a standard deviation of 0.78. Assume that the two populations are normally distributed. Use a 0.05 significance level to test the claim that both groups have the same amount of variation among the errors. Let sample 1 be the sample with the larger sample variance, and let sample 2 be the sample with the smaller sample variance. What are the null and alternative hypotheses? OA. H₂:0² = 0²/2 OB. H₂:0² = 0²/2 H₁: 0²/12 #02/22 H₁:0² > 0²/2 ỌC Họỏi cơ OD. Ho: 0²/02/2 H₁:0² <0² H₁:0² = 0²/2 Identify the test statistic. (Round to two decimal places as needed.) Use technology to identify the P-value. (Round to three decimal places as needed.)
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 mu greater than 98.6 degrees F. The sample size is n equals 5 and the test statistic is t equals 1.486. P-value equals (Round to three decimal places as needed.)
A student compared organic food prices at Grocery 1 and Grocery 2. The same items were priced at each store. The first three items are shown in the accompanying Figure A. Choose the correct accompanying output (B or C) for the appropriate test, explaining why you chose that output. Then test the hypothesis that the population means are not equal using a significance level of 0.05. Assume i Figure A and Outputs Click the icon to view Figure A and the outputs. Which is the correct output (B or C) for the appropriate test? Explain. (Figure A) Food Grocery 1 0.89 Grocery 2 0.99 A. Output B is appropriate because the data are paired samples. Bananas/1 Ib Grape tomatoes/1 Ib Russet potato/5 Ib 4.19 4.49 B. Output C is appropriate because there are two samples. 4.69 4.49 C. Output B is appropriate because n2 25. (Figure B) D. Output C is appropriate because the data are independent samples. N Mean StDev SE Mean Test the hypothesis that the population means are not equal using a significance…
In a hypothesis test the p-value is calculated to be 0.56. Which of the following is the most reasonable decision? Reject the null hypothesis. Accept the null hypothesis. Reject the alternative hypothesis. Fail to reject the null hypothesis.

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a. Calculate the test statistic. x² Round to two decimal places if necessary b. Determine the critical value(s) for the hypothesis test. c. Conclude whether to reject the null hypothesis or not based on the test statistic. Reject