You are conducting a study to see if the proportion of men over the age of 50 who regularly have theirprostate examined is significantly less than 0.39. A random sample of 787 men over the age of 50 foundthat 200 have their prostate regularly examined. Do the sample data provide convincing evidence tosupport the claim? Test the relevant hypotheses using a 1% level of significance. Give answer to at least 4decimal places.a. What are the correct hypotheses? (Select the correct symbols and use decimal values not percentages.)Ho: pH₁: pBased on the hypotheses, find the following:b. Test Statistic = -7.8166 Xc. Critical-value= -2.3263Shade: [Left of a value-2.3d. Shade the sampling distribution curve with the correct critical value(s) and shade the critical regions.The arrows can only be dragged to z-scores that are accurate to 1 place after the decimal point (thesevalues correspond to the tick marks on the horizontal axis). Select from the drop down menu to shade tothe left, to the right, between or left and right of the z-score(s).-10.390.390Click and drag the arrows to adjust the values.OB1e. The correct decision is to Reject the null hypothesis23o that thef. The correct summary would be: There is enough evidence to support the claimproportion of men over the age of 50 who regularly have their prostate examined is significantly less than0.39.

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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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A headline read, "More Than Half of Americans Say Federal Taxes Too High." The headline was based on a random sample of 1027 adult Americans in which 539 stated the amount of federal tax they have to pay is too high. Is this an accurate headline? Assume the a = 0.1 level of significance. Identify the null and alternative hypotheses for this test. O A. Ho: p 0.50 H,: p = 0.50 OC. Ho: p 0.50 O E. Ho: p= 0.50 H,: p#0.50 O F. Ho: p> 0.50 H,: p = 0.50 O D. Ho: p = 0.50 H,: p<0.50 Find the test statistic for this hypothesis test. (Round to two decimal places as needed.) z= Determine the P-value for this hypothesis test. P-value = (Round to three decimal places as needed.) State the conclusion for this hypothesis test. Ho. There sufficient evidence at the a= 0.1 level of significance to conclude that of Americans say that federal taxes are too high.
In a recent study of the prevalence of sexually transmitted diseases, a simple random sample of 35,000 Americans were selected and it was found that 20.1% reported having at least one STD. A hypothesis test for a difference from the expected 20% was found to be highly significant, though the difference is quite small. The explanation is that O All of the above O the sample size is very large. O the value of 20.1% is large compared to the hypothesized value of 20%. O it was an aberrant sample.
A poll showed the approval rating to be .52 (52%). A second poll based on 2500 randomly selected voters showed that 1315 approved of the job the president was doing. Do the results of the second poll indicate that the proportion of voters who approve of the job the president is doing is significantly higher than the original level? Explain. Assume the x=0.01 level of significance. Find the test statistic for this hypothesis test. z=?
75 In a study of the accuracy of fast food drive-through orders, one restaurant had 30 orders that were not accurate among 355 orders observed. Use a 0.05 significance level to test the claim that the rate of inaccurate orders is equal to 10%. Does the accuracy rate appear to be acceptable? Identify the null and alternative hypotheses for this test. Choose the correct answer below. OA. Ho: p=0.1 H₁: p>0.1 Type here 1 OB. Ho: P 0.1 H₁: p=0.1 ? OC. Ho p=0.1 H₁: p0.1 OD. Ho p=0.1. H₁ p<0.1 a N W 2 * W S # 3 X E D 141 $ Copyright 2022 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy Permissions Contact Us | 4 O C R B % F 5 V T G 6 4 & Y 7 * U 4+ B N 8 ( J H M 9 K P ► 11 ) O N O L (?) P 85°F ( + [ Next ADD40) = 1 insert ) ] pause prt sc backsp ONSO 1
In a simple random sample of 250 patients needing surgery, 80 said they obtained a second opinion. Let p be the true proportion of patients needing surgery who seek a second opinion and consider the significance test with hypotheses: ho: p=0.35 ha: p<0.35 What is the value of the test statistic (z-score) ?
Use technology to find the P-value for the hypothesis test described below. The claim is that for a smartphone carrier's data speeds at airports, the mean is p = 15.00 Mbps P-value = (Round to three decimal places as needed.)
Question Help v Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials, among 5782 patients treated with this drug, 157 developed the adverse reaction of nausea. Use a 0.05 significance level to test the claim that 3% of users develop nausea. Does nausea appear to be a problematic adverse reaction? Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.03 H: p#0.03 O B. Ho: p=0.03 H:p>0.03 OC. Ho: p#0.03 H: p=0.03 OD. Ho: p=0.03 H:p<0.03
In 1992 a national vital statistics report indicated that about 2.3% of all births produced twins. Is the rate of twin births the same among very young mothers? Data from a large city hospital found only 7 sets of twins were born to 455 teenage girls. Test an appropriate hypothesis and state your conclusion. Be sure the appropriate assumptions and conditions are satisfied before you proceed. Are the assumptions and the conditions to perform a one-proportion z-test met? ... No Yes State the null and alternative hypotheses. Choose the correct answer below. A. Ho: p=0.023 HA: P >0.023 B. Ho: p=0.023 HA: P = 0.023 C. Ho: p=0.023 HA: P<0.023 D. The assumptions and conditions are not met, so the test cannot proceed. Determine the z-test statistic. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. Z= (Round to two decimal places as needed.) OB. The assumptions and conditions are not met, so the test cannot proceed.
K In a study of the accuracy of fast food drive-through orders, one restaurant had 40 orders that were not accurate among 335 orders observed. Use a 0.01 significance level to test the claim that the rate of inaccurate orders is equal to 10%. Does the accuracy rate appear to be acceptable? 2 W S Identify the null and alternative hypotheses for this test. Choose the correct answer below. OA. Ho: p*0.1 H₁: p=0.1 View an example Get more help. дв OB. Ho: p=0.1 H₁: p0.1 X Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Monroe's Temp....docx Removed # 3 80 E D с $ 4 a R F SAMPLE Persuas....pdf % 5 V T G 6 B MacBook Air Fo Y H 5373255 (1) (1).docx & 7 N C... U * 8 J A DII 1 M D ( 9 K 5373255 (1).docx DD O : ; I 4 F11 { [ = option Check answer Show All ? 1 4 F12 X 1 I T I dele
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Use the pulse rates in beats per minute (bpm) of a random sample of adult females listed in the data set available below to test the claim that the mean is less than 74 bpm. Use a 0.01 significance level. E Click the icon to view the pulse rate data. Pulse Rate Data Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypotheses? Pulse Rate (bpm) O A. Ho: H= 74 bpm H1: H 74 bpm 57 35 104 86 ОС. Но: и» 74 bpm H1: µ<74 bpm O D. Ho: H=74 bpm H1: µ+74 bpm 97 101 62 49 59 73 Determine the test statistic. 69 45 104 42 |(Round to two decimal places as needed.) 52 105 99 36 Determine the P-value. 74 54 (Round to three decimal places as needed.) 105 60 56 82 State the final conclusion that addresses the original claim. 88 75 52 59 V Ho. There is evidence to conclude that the mean of the population of pulse rates for adult females is V 74 bpm. 82 104 97 76 76 47 97 74 63 52 93 98 104 53 35 35 100 39 Click to select your answer(s). 58 41

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