A random sample of 150 recent donations at a certain blood bank reveals that 88 were type A blood. Does this suggest that the actual percentage of type A donations differs from 40%, the percentage of the population having type A blood? Carry out a test of the appropriate hypotheses using a significance level of 0.01. n USE SALT State the appropriate null and alternative hypotheses. Hoip = 0.40 H: p + 0.40 O Ho: p + 0.40 Ha: p = 0.40 O Ho: p = 0.40 Hi p < 0.40 O Ho: p = 0.40 H:p > 0.40 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) P-value =

A random sample of 150 recent donations at a certain blood bank reveals that 88 were type A blood. Does this suggest that the actual percentage of type A donations differs from 40%, the percentage of the population having type A blood? Carry out a test of the appropriate hypotheses using a significance level of 0.01. n USE SALT State the appropriate null and alternative hypotheses. Hoip = 0.40 H: p + 0.40 O Ho: p + 0.40 Ha: p = 0.40 O Ho: p = 0.40 Hi p < 0.40 O Ho: p = 0.40 H:p > 0.40 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) P-value =

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Description: A random sample of 150 recent donations at a certain blood bank reveals that 88 were type A blood. Does this suggest that the actual percentage of type A donations differs from 40%, the percentageof the population having type A blood? Carry out a te

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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A random sample of 146 recent donations at a certain blood bank reveals that 82 were type A blood. Does this suggest that the actual percentage of type A donations differs from 40%, the percentage of the population having type A blood? Carry out a test of the appropriate hypotheses using a significance level of 0.01. USE SALT State the appropriate null and alternative hypotheses. Ho: P = 0.40 Ha: P = 0.40 Ho: P = 0.40 Ha: p > 0.40 Ho: P = 0.40 Ha: p < 0.40 Ho: P = 0.40 Ha: P = 0.40 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) Z = P-value = State the conclusion in the problem context. O Do not reject the null hypothesis. There is not sufficient evidence to conclude that the percentage of type A donations differs from 40%. O Do not reject the null hypothesis. There is sufficient evidence to conclude that the percentage of type A donations differs from 40%. O Reject the null hypothesis.…
A pizza delivery driver recently complained that the college students he delivers to don't tip as much other adults. Test this complaint at the a 0.05 level of significance. Let uc represent the average tip left by a college student and 4o represent the average tip left by other adults. Which would be correct hypotheses for this test? Ho: Hc = Ho, H1: c > Ho Ho: 4c = Ho, H: Hc < Ho %3D OHo: Hc = Ho, H1 : µc # µ0 %3D OHo:Hc < Ho, H1: Hc = HO A random sample of 42 college students had left an average tip of $3.44, with a standard deviation of $1.03. A random sample of 30 non-college-student adults had left an average tip of $4.32, with a standard deviation of $0.92. Find the test statistic (2 decimal places): Give the P-value (4 decimal places - if less than 0.001 answer 0): Which is the correct result: O Do not Reject the Null Hypothesis O Reject the Null Hypothesis Which would be the appropriate conclusion? There is significant evidence to suggest that college students tip less, on…
A random sample of 144 recent donations at a certain blood bank reveals that 86 were type A blood. Does this suggest that the actual percentage of type A donations differs from 40%, the percentage of the population having type A blood? Carry out a test of the appropriate hypotheses using a significance level of 0.01. In USE SALT State the appropriate null and alternative hypotheses. O H: p = 0.40 H:p 0.40 O Ho: p + 0.40 H: p = 0.40 O H: p = 0.40 H:p + 0.40 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) Z = P-value = State the conclusion in the problem context. O Reject the null hypothesis. There is sufficient evidence to conclude that the percentage of type A donations differs from 40%. O Do not reject the null hypothesis. There is sufficient evidence to conclude that the percentage of type A donations differs from 40%. O Do not reject the null hypothesis. There is not sufficient…
Independent random samples from normal populations produced the results shown in the table to the right. Complete parts a through d below. a pyy What are the null and alternative hypotheses? OA. Ho: H₁-H₂ = 0.10 Ha: H₁-P₂20.10 B. Ho H₁-₂0 H₂H₁ ₂0 D. H₂:1₁-11₂=0 H₂H₁-H₂ <0 C. Ho: Hi-Hy=0.10 Ha: H₁-H₂ ≤0.10 What is the test statistic? (Round to two decimal places as needed.) Sample 1 2.2 1.2 3.3 1.1 2.9 Sample 2 2.9 3.3 2.9 3.4
A random sample of 144 recent donations at a certain blood bank reveals that 89 were type A blood. Does this suggest that the actual percentage of type A donations differs from 40%, the percentage of the population having type A blood? Carry out a test of the appropriate hypotheses using a significance level of 0.01. State the appropriate null and alternative hypotheses. H0: p = 0.40Ha: p < 0.40H0: p = 0.40Ha: p > 0.40 H0: p ≠ 0.40Ha: p = 0.40H0: p = 0.40Ha: p ≠ 0.40 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) z = P-value = State the conclusion in the problem context. Reject the null hypothesis. There is sufficient evidence to conclude that the percentage of type A donations differs from 40%.Reject the null hypothesis. There is not sufficient evidence to conclude that the percentage of type A donations differs from 40%. Do not reject the null…
Women athletes at a certain university have a long-term graduation rate of 67%. Over the past several years, a random sample of 36 women athletes at the school showed that 21 eventually graduated. Does this indicate that the population proportion of women athletes who graduate from the university is now less than 67%? Use a 1% level of significance. A USE SALT (a) What is the level of significance? (b) State the null and alternate hypotheses. O Hạ: p = 0.67; H,:p 0.67 O Hạ: p = 0.67; H,: p + 0.67 O Hg: p 5 and ng > 5. O The standard normal, since np > 5 and ng > 5. O The Student's t, since np < 5 and ng < 5. What is the value of the sample test statistic? (Round your answer to two decimal places.) (c) Find the P-value of the test statistic. (Round your answer to four decimal places.) Sketch the sampling distribution and show the area corresponding to the P-value. o-3 -1 1 2 3. -2 -1 1 -2 -1 1 -2 -1 1 2 O0-3 00-3 O0-3 (d) Based on your answers in parts (a) to (c), will you reject or…
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
Recently, a large academic medical center determined that 8 of 19 employees in a particular position were male, whereas 54% of the employees for this position in the general workforce were male. At the 0.05 level of significance, is there evidence that the proportion of males in this position at this medical center is different from what would be expected in the general workforce? What are the correct hypotheses to test to determine if the proportion is different? O A. Ho: Ts0.54; H1: n> 0.54 Ο Β. H : π > 0.54, Η1. π < 0.54 ОС. Но: п20.54;B Н: л%3D0.54 O D. Ho: T= 0.54; H,: n#0.54 Calculate the test statistic. ZSTAT = (Type an integer or a decimal. Round to two decimal places as needed.) What is the p-value? The p-value is (Type an integer or a decimal. Round to three decimal places as needed.) State the conclusion of the test. the null hypothesis. There is evidence to conclude that the proportion of males in this position at this medical center is different from the proportion in the…
The second slide is the first part of the question and the first slide is the second part of the question.
Q6
E mw According to a recent poll 57% of Americans would vote for stricter gun controls. If a random sample of 100 people results in 68 individuals who would vote for stricter gun control, test the null hypothesis tha the actual percentage is 57%. As The null and alternative hypotheses are: Ho: p = 0.57 versus Ha: p > 0.57. The lowest level of significance to reject the null hypothesis is: OA: 0.06 OB: 0.04 OC: 0.09 OD: 0.02 OE: 0.03