In a population of fish, approximately 42% are female. A test is conducted to see if, in fact, the proportion is less. State the null and alternative hypotheses. Ho≤0.42; H₁≤0.42 Hu>0.42; Hi<0.42 Owwxx XXXX Ho=0.42; H=0.42 Ho=0.42; Hi<0.42 XXXW WXWX Ho=0.42; H>0.42
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- Write the null and alternative hypothesis. Are Americans getting fatter? Researchers interested in this question take a random sample of 500 people and record an average weight of 190 pounds. Ten years ago, the average weight was 185 pounds. OA Ho: H= 190 HA: H> 190 О в. Но: и 185 HAiH> 185 OC. Ho: u= 190 HA:u< 190 O D. Ho: u= 185 HA: H< 185 OE. Ho:H= 185 HA u# 185Listed in the accompanying table are numbers of hospital admissions in one region due to traffic accidents on different Fridays falling on the 6th day of a month and the following 13th day of the month. Assume that we want to use a 0.05 significance level to test the claim that the data support the claim that the same number of hospital admissions due to traffic accidents occur on Friday the 6th than on the following Friday the 13th. Identify the null hypothesis and alternative hypothesis. Let the differences be the accidents on the 6th minus the accidents on the 13th. The null hypothesis is Ho: Hd ▼ (Type an integer or a decimal. Do not round.) -C Friday 6th Friday 13th 10 14 5 13 10 14 9 9 1 2 5 11Explicate a null and alternative hypothesis in words and symbol and tell whether the test is directional or non directional.A librarian of school claims that all grade 7 students read an average 15 books a month. A random sample of grade 7 student read an average of 17 books. The confidence statement is 95%
- Are freshmen psychology majors more likely to change their major before they graduate compared to freshmen business majors? 428 of the 639 freshmen psychology majors from a recent study changed their major before they graduated and 502 of the 783 freshmen business majors changed their major before they graduated. What can be concluded at the a = 0.10 level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answer v Select an answer v| Select an answer v H: Select an answer v Select an answer v| Select an answer v AW b. The test statistic ? v = (please show your answer to 2 decimal places.) es c. The p-value = (Please show your answer to 4 decimal places.) d. The p-value is ? a e. Based on this, we should Select an answer f. Thus, the final conclusion is that ... the null hypothesis. O The results are statistically significant at a = 0.10, so there is sufficient evidence to conclude that the population…A study of 100 randomly selected students revealed that 39% of sampled student used books for studying i. Based on this study, estimate the true proportion of student that use books for studying with 95% confidence.ii. If there are 10,000 student in a school, what would be the minimum and maximum number of student expected to use books for study?Are blonde female college students more likely to have boyfriends than brunette female college students? 439 of the 658 blondes surveyed had boyfriends and 483 of the 748 brunettes surveyed had boyfriends. What can be concluded at the a = 0.05 level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answerv Select an answer Select an answer (please enter a decimal) H1: Select an answer v Select an answerv Select an answerv (Please enter a decimal) b. The test statistic ?v = (please show your answer to 3 decimal places.) c. The p-value = d. The p-value is ?v a e. Based on this, we should Select an answerv the null hypothesis. f. Thus, the final conclusion is that... (Please show your answer to 4 decimal places.) O The results are statistically insignificant at a = 0.05, so we can conclude that the population proportion of blonde college students who have a boyfriend is equal to the population proportion of…
- A store owner wanted to determine if more than 5% of customers made a purchase after he sent out a text. He sent out 300 texts to 300 randomly selected customers. Out of those 300, 17 made purchases. Is this evidence that if he sent out texts to all of his customers more than 5% would make purchases? What is the appropriate null and alternative hypothesis? Ho: p= 0.05 Ha: p> 0.05 O Ho: phat = 0.05 Ha: phat > 0.05 O Ho: p= 0.056 Ha: p > 0.056 O Ho: mu = 0.05 Hla: mu > 0.05Suppose that in a random selection of 100 colored candies, 22% of them are blue. The candy company claims that the percentage of blue candies is equal to 30%. Use a 0.10 significance level to test that claim. Identify the null and alternative hypotheses for this test. Choose the correct answer below. A. Upper H 0: pequals0.3 Upper H 1: pgreater than0.3 B. Upper H 0: pequals0.3 Upper H 1: pnot equals0.3 C. Upper H 0: pequals0.3 Upper H 1: pless than0.3 D. Upper H 0: pnot equals0.3 Upper H 1: pequals0.3 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is nothing. (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is nothing. (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test. A. Fail to reject Upper H 0. There is sufficient evidence to warrant rejection of the claim that the percentage of blue candies is…Suppose that in a random selection of 100 colored candies, 25% of them are blue. The candy company claims that the percentage of blue candies is equal to 26%. Use a 0.01 significance level to test that claim. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.26 H₁: p0.26 O C. Ho: p=0.26 H₁: p=0.26 O D. Ho: p=0.26 H₁: p=0.26 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. Reject Ho. There is sufficient evidence to warrant rejection of the claim that the percentage of blue candies is equal to 26% B. Reject Ho. There is not sufficient evidence to warrant rejection of the claim that the percentage of blue candies is equal to 26% C. Fail to reject Hỏ. There is…
- A hypothesis test uses a significance level of 5%. The Power of the Test is 0.90. Which of these statements are True? I. The Probability of incorrectly rejecting the Null is 0.05. II. The probability of incorrectly accepting the Null is 0.10. A. I only. B. II only. C. I. & II. D. None of them. А. А В. В С. С D. DSuppose that in a random selection of 100 colored candies, 22% of them are blue. The candy company claims that the percentage of blue candies is equal to 30%. Use a 0.10 significance level to test that claim. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.3 H₁: p=0.3 O B. Ho: p=0.3 H₁: p=0.3 C. Ho: p=0.3 H₁: p>0.3 O D. Ho: p=0.3 H₁: p<0.3 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. A. Reject Ho. There is sufficient evidence to warrant rejection of the claim that the percentage of blue candies is equal to 30% B. Reject Ho. There is not sufficient evidence to warrant rejection of the claim that the percentage of blue candies is equal to 30% O C. Fail to…need help with B, C, D