Charmaine recently switched her primary doctor to one specializing in caring for elderly patients. On her new doctor's website, it says that the mean systolicblood pressure among elderly females is 120 millimeters of mercury (mmHg). Charmaine believes the value is actually higher. She bases her belief on a recentlyreported study of 10 randomly selected, elderly females. The sample mean systolic blood pressure was 128 mmHg, and the sample standard deviation was 25mmHg.Assume that the systolic blood pressures of elderly females are approximately normally distributed. Based on the study, at the 0.10 level of significance, can itbe concluded that u, the population mean systolic blood pressure among elderly females, is greater than 120 mmHg?Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.)(a) State the null hypothesis H, and the alternative hypothesis H,.Ho :0H, :0(b) Determine the type of test statistic to use.Degrees of freedom: 0D=0OSO(c) Find the value of the test statistic. (Round to three or more decimal places.)O

Given data : sample size, n =10 sample mean, x̄ = 128 sample standard deviation,s=…

Answered: |(a) State the null hypothesis H, and…

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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Consider the following data on price ($) and the overall score for six stereo headphones tested by a certain magazine. The overall score is based on sound quality and effectiveness of ambient noise reduction. Scores range from 0 (lowest) to 100 (highest). Brand Price ($) Score A 180 76 B 150 69 95 59 70 58 E 70 42 35 26 (a) The estimated regression equation for this data is ý = 24.599 + 0.304x, where x = price ($) and y = overall score. Does the t test indicate a significant relationship between price and the overall score? Use a = 0.05. State the null and alternative hypotheses. O Ho: B, + 0 H: B, = 0 O Hoi Bo#0 H3: Bo = 0 O Ho: Bo = 0 H,: Bo = 0 O Ho: B1 = 0 H3: Bq 0 O Hoi Bqz 0 H: B, < 0 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = What is your conclusion? O Reject Ho. We cannot conclude that the relationship between price ($) and overall score is significant. O Do not…
An experiment wants to determine the impact of two inputs (X and Y) on the quantity of the good produced. The results from this experiment is shown in the table: Input X Input Y A B C 1 80 88 73 2 87 83 83 3 90 93 79 State the null hypothesis for this study (in words) Calculate all the sum of squared deviations for the experiment. Calculate all the mean of squared deviations for the experiment. Calculate the relevant F-statistics. Using a significance level of 5% what conclusions would you draw from the study?
Which statistical test should this question use? Q. Testing the relationship between the level of happiness and times spend on exercising. Choose from the following: z score One sample z-test One sample t-test Two sample t-test F test (One-way ANOVA) F test (Two-way ANOVA) Pearson r Spearman Point Vi-serial Phi Coefficient
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A hypothesis test claims that Americans enjoy podcasts that are 25 minutes long on average. The results of a one-sample test for the preferred average length of a podcast is given in the following output. Test at the α = 0.05 significance level. (a) Does the output show that your should reject the null hypothesis or fail to reject the null hypothesis? (b) Why? (c) Is the null hypothesis the same statement as the original claim or different? (d) Write a formal conclusion addressing the original context.
Test the claim that the proportion of men who own cats is smaller than 90% at the .01 significance level. The test is based on a sample of 25 people, in which 84% of the sample owned cats. The null and alternative hypothesis would be: Ho:p = 0.9 H1:p < 0.9 The test is left tailed. What is the test statistic and critical value? (to 2 decimal places)
On a certain hearing ability test, the mean is 300 and the standard deviation is 20. Thebetter you can hear, the higher your score. Can people who clean their ears frequentlyhear better than others? You take a sample of 31 people who clean their earsfrequently. Their sample mean test score is 308. Do a hypothesis test with α = 0.01.H 0 : People who clean their ears regularly hear at the same level that everyone elsedoes: µ = 300. c. Calculate your test statistic and draw it on your null hypothesis curve. This is justyour sample statistic ( or ) converted to a Z-score on your null hypothesis samplingdistribution. Make sure you are using the appropriate SE formula! Use forproportions and for means. d. Treat your test statistic as a Z-score and look up the area beyond it in the Z-table.That is your p-value. It may be helpful to shade this on your curve. (Remember, ifyou have a < in your alternative hypothesis, you’re looking at the area below yourtest statistic. If you have a…
pls answer b with some explanation tq
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