Homework Answers
fir the direction of this test is if mean value is higher than 25 ; therefore direction is on the right side of 25
hence right tailed test:
option B
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Provide an appropriate response. Given Ho: ? 25 and Ha: ?> 25, determine whether the hypothesis...
A null and alternative hypothesis are given. Determine whether the hypothesis test is left-tailed, right-tailed, or...
A null and alternative hypothesis are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. Ho: ơ 8.2 Ha : σ> 8.2 What type of test is being conducted in this problem? OA. ° C. Left-tailed test Two-tailed test B. Right-tailed test
Consider the hypothesis test below. Ho: P 1-2250 Ha: P 1-22 > 0 The following results...
Consider the hypothesis test below. Ho: P 1-2250 Ha: P 1-22 > 0 The following results are for independent samples taken from the two populations. Sample 1 Sample 2 ni = 200 n2 = 400 P1 = 0.26 P2 = 0.16 -a. What is the value of the test statistic (to 2 decimals)? b. What is the p-value (to 4 decimals)? c. With a = .05, what is your hypothesis testing conclusion? Select
In a test of the hypothesis Ho: u = 59 versus Ha: u>59, a sample of...
In a test of the hypothesis Ho: u = 59 versus Ha: u>59, a sample of n = 100 observations possessed mean x = 58.5 and standard deviation s = 3.8. Find and interpret the p-value for this test. The p-value for this test is (Round to three decimal places as needed.)
For the following hypothesis test, determine the null and alternative hypotheses. Also, classify the hypothesis test...
For the following hypothesis test, determine the null and alternative hypotheses. Also, classify the hypothesis test as two tailed, left tailed, or right tailed The mean local monthly bill for cell phone users in this country was $43.56 in 2001. A hypothesis test is to be performed to determine whether last year's mean local monthly bill for cell phone users has decreased from the 2001 mean of $43.56 Choose the correct null and alternative hypotheses below OA. Ho : μ...
State Ho and Ha in words and in symbols. Then determine whether the hypothesis test is...
State Ho and Ha in words and in symbols. Then determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. Explain your reasoning. Sketch a normal sampling distribution and shade the area for the P-value. A report claims that lung cancer accounts for at most 28% of all cancer diagnoses. State the null hypothesis in words and in symbols. The null hypothesis expressed in words is the proportion of cancer diagnoses attributable to lung cancer The null hypothesis is expressed...
State Ho and Ha in words and in symbols. Then determine whether the hypothesis test is...
State Ho and Ha in words and in symbols. Then determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. Explain your reasoning. Sketch a normal sampling distribution and shade the area for the P-value. A report claims that lung cancer accounts for at most 28% of all cancer diagnoses. State the null hypothesis in words and in symbols. The null hypothesis expressed in words is the proportion of cancer diagnoses attributable to lung cancer The null hypothesis is expressed...
Consider the following hypothesis test. Ho: M1-M250 H: H 1 - > 0 The following results...
Consider the following hypothesis test. Ho: M1-M250 H: H 1 - > 0 The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n1 - 30 n2 - 50 * 1 = 25. 9 2 = 22.8 01 - 5.2 02-7 a. What is the value of the test statistic (round to 2 decimals)? b. What is the p-value (round to 4 decimals)? Use z-table. Use z-value rounded to 2 decimal places. c....
Ho u >= 75 HA u < 75 A sample of 30 items was taken from...
Ho u >= 75 HA u < 75 A sample of 30 items was taken from a large population. The sample mean was 72 and the population standard deviation was 7. Using alpha = 0.05, what is the critical value? 1.96 O 1.645 0 -1.645 -1.96 Question 4 Consider the following hypothesis: Ho u >= 75 HA ll < 75 A sample of 30 items was taken from a large population. The sample mean was 72 and the population standard...
9 Test the null hypothesis Ho : u = 3.0against the alternative hypothesis HA: U < 3.0 , based on a random sample of 2...
9
Test the null hypothesis Ho : u = 3.0against the alternative hypothesis HA: U < 3.0 , based on a random sample of 25 observations drawn from a normally distributed population with ū = 2.8 and o = 0.70. a) What is the value of the test statistic? Round your response to at least 3 decimal places. Number b) What is the appropriate p-value? Round your response to at least 3 decimal places. Number c) Is the null hypothesis...
Ho: u= 6 HA: u>6 2. [4] An observation X is drawn from a Poisson distribution...
Ho: u= 6 HA: u>6 2. [4] An observation X is drawn from a Poisson distribution with mean u. Consider a test of the hypotheses at right. Suppose X = 12 is observed. a. [3] Determine the P-value for the test. b. [1] If the significance level is a= 0.05, what is your decision?
A null and alternative hypothesis are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. Ho: ơ 8.2 Ha : σ> 8.2 What type of test is being conducted in this problem? OA. ° C. Left-tailed test Two-tailed test B. Right-tailed test
Consider the hypothesis test below. Ho: P 1-2250 Ha: P 1-22 > 0 The following results are for independent samples taken from the two populations. Sample 1 Sample 2 ni = 200 n2 = 400 P1 = 0.26 P2 = 0.16 -a. What is the value of the test statistic (to 2 decimals)? b. What is the p-value (to 4 decimals)? c. With a = .05, what is your hypothesis testing conclusion? Select
In a test of the hypothesis Ho: u = 59 versus Ha: u>59, a sample of n = 100 observations possessed mean x = 58.5 and standard deviation s = 3.8. Find and interpret the p-value for this test. The p-value for this test is (Round to three decimal places as needed.)
For the following hypothesis test, determine the null and alternative hypotheses. Also, classify the hypothesis test as two tailed, left tailed, or right tailed The mean local monthly bill for cell phone users in this country was $43.56 in 2001. A hypothesis test is to be performed to determine whether last year's mean local monthly bill for cell phone users has decreased from the 2001 mean of $43.56 Choose the correct null and alternative hypotheses below OA. Ho : μ...
State Ho and Ha in words and in symbols. Then determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. Explain your reasoning. Sketch a normal sampling distribution and shade the area for the P-value. A report claims that lung cancer accounts for at most 28% of all cancer diagnoses. State the null hypothesis in words and in symbols. The null hypothesis expressed in words is the proportion of cancer diagnoses attributable to lung cancer The null hypothesis is expressed...
State Ho and Ha in words and in symbols. Then determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. Explain your reasoning. Sketch a normal sampling distribution and shade the area for the P-value. A report claims that lung cancer accounts for at most 28% of all cancer diagnoses. State the null hypothesis in words and in symbols. The null hypothesis expressed in words is the proportion of cancer diagnoses attributable to lung cancer The null hypothesis is expressed...
Consider the following hypothesis test. Ho: M1-M250 H: H 1 - > 0 The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n1 - 30 n2 - 50 * 1 = 25. 9 2 = 22.8 01 - 5.2 02-7 a. What is the value of the test statistic (round to 2 decimals)? b. What is the p-value (round to 4 decimals)? Use z-table. Use z-value rounded to 2 decimal places. c....
Ho u >= 75 HA u < 75 A sample of 30 items was taken from a large population. The sample mean was 72 and the population standard deviation was 7. Using alpha = 0.05, what is the critical value? 1.96 O 1.645 0 -1.645 -1.96 Question 4 Consider the following hypothesis: Ho u >= 75 HA ll < 75 A sample of 30 items was taken from a large population. The sample mean was 72 and the population standard...
9
Test the null hypothesis Ho : u = 3.0against the alternative hypothesis HA: U < 3.0 , based on a random sample of 25 observations drawn from a normally distributed population with ū = 2.8 and o = 0.70. a) What is the value of the test statistic? Round your response to at least 3 decimal places. Number b) What is the appropriate p-value? Round your response to at least 3 decimal places. Number c) Is the null hypothesis...
Ho: u= 6 HA: u>6 2. [4] An observation X is drawn from a Poisson distribution with mean u. Consider a test of the hypotheses at right. Suppose X = 12 is observed. a. [3] Determine the P-value for the test. b. [1] If the significance level is a= 0.05, what is your decision?
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