was found that 573 students were considered to be prepared for college. Use a 0.10 significance level to test the claim that the proportion of students prepared for college is equal to 80%.
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A: p=33%, n=400, x=120
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A: Given that, A hospital found out that there is a higher incidence of food poisoning in adults than…
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A: Given: p0=0.98α=0.01n=500x=480
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A: Given: p0=0.32n=1115
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A: Correlation: The correlation value is obtained using EXCEL. The software procedure is given below:…
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A: Answer: From the given data, Population proportion (P) = 33% = 0.33 Sample size (n) = 1875 x = 436…
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A: Given : Claim : At least 85% of the parts they supplied conforms to specification.
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A: We have given that Sample size n = 1126 Favorable cases x = 305 Sample proportion p^=x/n
Q: Suppose 214 subjects are treated with a drug that is used to treat pain and 53 of them developed…
A:
Q: Which null hypothesis could be tested using a Proportion Test?
A: Here use basic of null and alternative hypothesis
Q: A recent survey showed that from a sample of 500 packages delivered by a Postal Service,480 were…
A: Given that : A recent survey showed that a sample of 500 packages delivered by a postal service,…
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A: People over the age of 50 are taken as group 1. People under the age of 25 are taken as group 2.…
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A: Given data: Test statistics = 0.968 The test is assumed to be right tailed test. Significance level…
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A: The objective of this question is to test the claim that the proportion of people over 55 who dream…
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A:
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A: From the provided information, Sample size (n) = 54 Out of which 35 involved an intoxicated driver.…
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A: Solution: State the hypotheses Null hypothesis: H0: p≤0.20 That is, the proportion of users develop…
Q: b. The test statistic [z |(please show your answer to 3 decimal places.) c. The p-value (Please show…
A: Given : x1 = 432x2 = 460n1 = 676n2 = 773 Level of significance = α = 0.05
Q: Suppose 221 subjects are treated with a drug that is used to treat pain and 52 of them developed…
A:
Q: A researcher claims that not more than 65% officers in the public offices come on time in their…
A: The null and alternative hypothesis is: Ho:p≤0.65 Ha:p>0.65 This corresponds to a right-tailed…
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A: Note: " Since you have asked multiple sub-parts, we will solve the first three sub-parts for you. If…
Q: A new soft drink is being market tested. A sample of 400 individuals participated in the taste test…
A: a)Rules to construct hypothesis :- we know that null hypothesis always contain sign ≤, ≥,=and…
Q: a study was conducted to determine the proportion of people who dream in black and white instead of…
A: The objective of this question is to conduct a hypothesis test to determine if the proportion of…
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A: Solution-: Given: We find, (a) Identify the test statistic (b) Identify p-value (c) Identify the…
Q: A study was conducted to determine the proportion of people who dream in black and white instead of…
A: Dear student as per guidelines we answer the first three subparts only. Please post other subparts…
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A: Given: Total number of smokers = 198 (n). Number of smokers who quit smoking after sustained care =…
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A: Consider that μ is the national average of the mileage.
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Q: Suppose 236 subjects are treated with a drug that is used to treat pain and 53 of them developed…
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Q: marketer belive that 92% of adult in germany own a cell phone . a cell phone manufacture believes…
A: Given: p0=0.92x=174n=200p⏜=174200p⏜=0.87α=0.05
Q: Suppose 214 subjects are treated with a drug that is used to treat pain and 54 of them developed…
A: Given that, x=54,n=214 The sample proportion is, Null and alternative hypothesis:
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- John is interested in whether there is a relationship between gender and attitudes towards flogging children. He asked 60 persons “Do you think that parents should be allowed to flog their children?”. The results are shown in the table below: Conduct a test, at the 3% significance level, to determine whether gender and attitudes towards flogging were related. State the null and alternative hypotheses for this test. Create a table showing the expected frequencies if gender and flogging were independent (not related). What proportion of the expected frequencies are less than 5? How does this affect the validity of the test? Given that the chi-square test statistic, χ2, is 0.7554, estimate the p-value for this test. State the conclusion for the test. Give reason for your answer.A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 314 people over the age of 55, 78 dream in black and white, and among 305 people under the age of 25, 14 dream in black and white. Use a 0.01 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of people under the age of 25. What are the null and alternative hypotheses for the hypothesis test? Identify the test statistic. Identify the P-value. What is the conclusion based on the hypothesis test?Suppose 242 subjects are treated with a drug that is used to treat pain and 50 of them developed nausea. Use a 0.01 significance level to test the claim that more than 20% of users develop nausea. O A. Ho:p=0.20 H;:p>0.20 O B. Ho: p= 0.20 H,:p#0.20 OC. Ho: p=0.20 H4:p0.20 H4:p= 0.20 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test. O A. Fail to reject Ho. There is sufficient evidence to warrant support of the claim that more than 20% of users develop nausea. O B. Reject Ho. There is sufficient evidence to warrant support of the claim that more than 20% of users develop nausea. O C. Reject Ho. There is not sufficient evidence to warrant support of the claim that more than 20% of users develop nausea. O D. Fail to reject…
- A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 307 people over the age of 55, 68 dream in black and white, and among 313 people under the age of 25, 12 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below.Based on information from the Federal Highway Administration web site, the average annual miles driven per vehicle in the United States is 13.5 thousand miles. Assume ? ≈ 650 miles. Suppose that a random sample of 41 vehicles owned by residents of Chicago showed that the average mileage driven last year was 13.2 thousand miles. Would this indicate that the average miles driven per vehicle in Chicago is different from (higher or lower than) the national average? Use a 0.05 level of significance. Sketch the sampling distribution and show the area corresponding to the P-value. (d) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis? Are the data statistically significant at level ?? At the ? = 0.05 level, we reject the null hypothesis and conclude the data are statistically significant. At the ? = 0.05 level, we reject the null hypothesis and conclude the data are not statistically significant. At the ? = 0.05 level, we fail to reject the…* is A study was conducted to determine the proportion of people who dream in black and white Instead of color. Among 307 people over the age of 55, 69 dream in black and white, and among 301 people under the age of 25, 13 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of people under the age of 25. What are the null and alternative hypotheses for the hypothesis test? OA. Ho: P1 P2 H₁: P1 P2 OD. Ho: P1 SP2 H₁: P1 P2 Identify the test statistic. (Round to two decimal places as needed.) Identify the P-value. P-value= (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? the significance level of a 0.05, so b. Test…
- Suppose 219 subjects are treated with a drug that is used to treat pain and 51 of them developed nausea. Use a .10 significance level to test the claim that more than 20% of users develop nausea.At 5% significance level, state the hypotheses and test whether there is a relationship between marital status and work shift.Thanks
- Reports show that 92% of online searches in March 2021 use Google as the search engine. A network administrator wants to determine whether the percentage of searches that use Google is different in their company. They sample 800 searches and find that 758 of them use Google. Can they conclude that the percentage of searches that use Google in this company differs from 92%? Use the a = 0.05 level of significance.A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 297 people over the age of 55, 75 dream in black and white, and among 310 people under the age of 25, 19 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below. a. Identify the test statistic. z= 6.51 (Round to two decimal places as needed.) Identify the P-value. P-value = 3.770o (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? The P-value is greater than the significance level of a = 0.05, so fail to reject the null hypothesis. There is insufficient evidence to support the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. b. Test the claim by constructing an appropriate confidence…A simple random sample of 300 men included 71 who smoke, and a simple random sample of 310 women included 68 who smoke. Use a .05 level of significance to test the claim that the proportion of men who smoke is greater than the proportion of women who smoke.