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Suppose you have the following null and alternative hypotheses: HOS 28 HI 28 it is known...
2. Suppose you have the following null and alternative hypotheses: H: os 34.5 HA: 0 >...
2. Suppose you have the following null and alternative hypotheses: H: os 34.5 HA: 0 > 34.5 If you take a random sample of 12 observations (n=12) from a normally distributed population and find that s' = 68.1, what is the most accurate statement that can be made about the p-value for this test? Select one: a. 0.025 <p-value < 0.05 b. 0.05 p-value < 0.10 c. 0.01 <p-value < 0.025 d. p-value < 0.01
Consider the following null and alternative hypotheses: Ho: p=0.76 versusH1: p≠ 0.76 A random sample of...
Consider the following null and alternative hypotheses: Ho: p=0.76 versusH1: p≠ 0.76 A random sample of 525 observations taken from this population produced a sample proportion of 0.80. a. If this test is made at a 5% significance level, would you reject the null hypothesis? Use the critical-value approach. Round your answer for z to two decimal places. z(observed)= z critical left= z critical right= We reject/fail to reject null hypothesis b. What is the probability of making a Type...
a) State the appropriate null and alternative hypotheses.
A college entrance exam company determined that a score of 22 on the mathematics portion of the exam suggests that a student is ready for college-level mathematics. To achieve this goal, the company recommends that students take a core curriculum of math courses in high school. Suppose a random sample of 150 students who completed this core set of courses results in a mean math score of 22.4 on the college entrance exam with a standard deviation of 3.8. Do...
To perform a test of the null and alternative hypotheses shown below, random samples were selected...
To perform a test of the null and alternative hypotheses shown below, random samples were selected from the two normally distributed populations with equal variances. The data are shown below. Test the null hypothesis using an alpha level equal to 0.01. Sample from Population 1 Sample from Population 2 31 39 28 34 35 35 40 38 32 32 36 26 35 44 33 28 35 31 31 34 Ho: μ1-uz"0 Determine the rejection region for the test statistic t....
a. Select the null and the alternative hypotheses in order to test whether average monthly debt...
a. Select the null and the alternative hypotheses in order to test whether average monthly debt payments are greater than $900 НО : 900 ; НА : 900 H0: μ 900; HA: μ > 900 0H0: μ 900, HA: μ < 900 0 b. What assumption regarding the population is necessary to implement this step? Unimodal and fairly symmetric O Unimodal and skewed Not necessarily unimodal and symmetric Not necessarily unimodal and skewed c-1. Calculate the value of the test...
Consider the following hypotheses: Ho: 4 = 150 HA: H < 150 A sample of 80...
Consider the following hypotheses: Ho: 4 = 150 HA: H < 150 A sample of 80 observations results in a sample mean of 144. The population standard deviation is known to be 28. (You may find it useful to reference the appropriate table: z table or t table) a-1. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal...
8. If you have data in the form of proportions and you want to conduct a...
8. If you have data in the form of proportions and you want to conduct a hypothesis test, which of the following does not need to be known in order to compute a test statistic? A. The significance (or alpha) level. B. The sample proportion. C. The claimed population proportion. D. The sample size. E. All of the above need to be known in order to compute the test statistic. 9. It is claimed that 75% of parents believe their...
Consider the following hypotheses: H0: μ ≤ 420 HA: μ > 420 Find the p-value for...
Consider the following hypotheses: H0: μ ≤ 420 HA: μ > 420 Find the p-value for this test based on the following sample information. (You may find it useful to reference the appropriate table: z table or t table) a. x¯ = 430; s = 41; n = 13 p-value 0.10 0.05 p-value < 0.10 0.025 p-value < 0.05 0.01 p-value < 0.025 p-value < 0.01 b. x¯ = 430; s = 41; n = 26 0.025 p-value < 0.05...
Consider a hypothesis testing situation in which the null hypothesis is p = 0.05 and the...
Consider a hypothesis testing situation in which the null hypothesis is p = 0.05 and the alternative is p > 0.5. Data is gathered from a random sample and a test statistic of 2.1 is computed. This means the p-value would have to be: A. less than 0.01. B. between 0.01 and 0.05 C. between 0.05 and 0.10 D. greater than 0.10 E. More information is needed in order to determine the p-value.
Consider the following hypotheses: HO: 220 HA u < 220 A sample of 72 observations results...
Consider the following hypotheses: HO: 220 HA u < 220 A sample of 72 observations results in a sample mean of 209. The population standard deviation is known to be 18. (You may find it useful to reference the appropriate table: z table or tablet a-1. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) Test statistic...
2. Suppose you have the following null and alternative hypotheses: H: os 34.5 HA: 0 > 34.5 If you take a random sample of 12 observations (n=12) from a normally distributed population and find that s' = 68.1, what is the most accurate statement that can be made about the p-value for this test? Select one: a. 0.025 <p-value < 0.05 b. 0.05 p-value < 0.10 c. 0.01 <p-value < 0.025 d. p-value < 0.01
To perform a test of the null and alternative hypotheses shown below, random samples were selected from the two normally distributed populations with equal variances. The data are shown below. Test the null hypothesis using an alpha level equal to 0.01. Sample from Population 1 Sample from Population 2 31 39 28 34 35 35 40 38 32 32 36 26 35 44 33 28 35 31 31 34 Ho: μ1-uz"0 Determine the rejection region for the test statistic t....
a. Select the null and the alternative hypotheses in order to test whether average monthly debt payments are greater than $900 НО : 900 ; НА : 900 H0: μ 900; HA: μ > 900 0H0: μ 900, HA: μ < 900 0 b. What assumption regarding the population is necessary to implement this step? Unimodal and fairly symmetric O Unimodal and skewed Not necessarily unimodal and symmetric Not necessarily unimodal and skewed c-1. Calculate the value of the test...
Consider the following hypotheses: Ho: 4 = 150 HA: H < 150 A sample of 80 observations results in a sample mean of 144. The population standard deviation is known to be 28. (You may find it useful to reference the appropriate table: z table or t table) a-1. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal...
Consider the following hypotheses: HO: 220 HA u < 220 A sample of 72 observations results in a sample mean of 209. The population standard deviation is known to be 18. (You may find it useful to reference the appropriate table: z table or tablet a-1. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) Test statistic...
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