8. a. Consider the following hypothesis test. H₀: π ≤0.4 H₁: π >0.4 A sample of...
8. a. Consider the following hypothesis test. H₀: π ≤0.4 H₁: π >0.4 A sample of n = 300 provided a sample proportion of p̅ = 0.45. At α = 0.05, what is your conclusion?
TS = ______; CV = ______. State the decision rule.
a. 1.77; 1.64. Do not conclude the population proportion is greater than 0.40.
b. 1.77; 1.64. Conclude the population proportion is greater than 0.40.
c. 1.52; 1.64. Do not conclude the population proportion is greater than 0.40.
d. 1.52; 1.96. Conclude the population proportion is greater than 0.40.
8. b. In the previous question, the prob value for the test is:
a. 0.0768
b. 0.0678
c. 0.0384
d. 0.0239
Homework Answers
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8. a. Consider the following hypothesis test. H₀: π ≤0.4 H₁: π
>0.4 A sample of...
In order to conduct a hypothesis test for the population proportion, you sample 450 observations that...
In order to conduct a hypothesis test for the population
proportion, you sample 450 observations that result in 189
successes. (You may find it useful to reference the
appropriate table: z table or t
table)
H0: p ≥ 0.45;
HA: p < 0.45.
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 =
a-2....
In order to conduct a hypothesis test for the population proportion, you sample 320 observations that...
In order to conduct a hypothesis test for the population proportion, you sample 320 observations that result in 128 successes.(You may find it useful to reference the appropriate table: z table or t table HO pz 0.45; HA: p < 0.45. 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.) est statistic a-2. Find the p-value....
Consider the following hypothesis test: H 0: 50 H a: > 50 A sample of 70...
Consider the following hypothesis test: H 0: 50 H a: > 50 A sample of 70 is used and the population standard deviation is 9. Use the critical value approach to state your conclusion for each of the following sample results. Use = .05. a. With = 52.5, what is the value of the test statistic (to 2 decimals)? Can it be concluded that the population mean is greater than 50? b. With = 51, what is the value of...
Consider the following hypothesis test: H 0: 50 H a: > 50 A sample of 70 is used...
Consider the following hypothesis test: H 0: 50 H a: > 50 A sample of 70 is used and the population standard deviation is 6. Use the critical value approach to state your conclusion for each of the following sample results. Use = .05. a. With = 52.5, what is the value of the test statistic (to 2 decimals)? Can it be concluded that the population mean is greater than 50? SelectYesNoItem 2 b. With = 51, what is the value of the test statistic...
Suppose a random sample of 100 observations from a binomial population gives a value of p...
Suppose a random sample of 100 observations from a binomial population gives a value of p = 0.45 and you wish to test the null hypothesis that the population parameter p is equal to 0.40 against the alternative hypothesis that p is greater than 0.40. Complete parts a through c. a. Noting that p = 0.45, what does your intuition tell you? Does the value of p appear to contradict the null hypothesis? O A. Yes, because p satisfies Hg:p>0.40...
Suppose researchers perform a large-sample test of a population proportion where the null hypothesis is that...
Suppose researchers perform a large-sample test of a population proportion where the null hypothesis is that the population proportion is 0.4, and the alternative hypothesis is that the population proportion is greater than 0.4 (one-sided). They obtain a z-statistic of 2 under the null hypothesis. What is the (one-sided) p-value?
Question 9 2.5 pts Consider the following hypothesis test: H: H: 25 > 25 A sample...
Question 9 2.5 pts Consider the following hypothesis test: H: H: 25 > 25 A sample of 40 provided a sample mean of 26.4. The population standard deviation is 4. What is the value of the test statistic for this test? 2.21 1.96 0.350 1.645 Question 13 2.5 pts Consider a hypothesis test to see if the average student scores in exam 2 is less than their score for exam 1. We calculate our test statistic on the z-table to...
In order to conduct a hypothesis test for the population proportion, you sample 440 observations that...
In order to conduct a hypothesis test for the population proportion, you sample 440 observations that result in 220 successes. (You may find it useful to reference the appropriate table: z table or table) He: p > 0.52; HA: p < 0.52. 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 a-2. Find the...
n order to conduct a hypothesis test for the population proportion, you sample 480 observations that...
n order to conduct a hypothesis test for the population proportion, you sample 480 observations that result in 264 successes. (You may find it useful to reference the appropriate table: z table or t table) Ho: pz 0.60 HA: p0.60 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 2.24 a-2. Find the p-value....
You wish to test the following claim ( H a H a ) at a significance level of α = 0.10 α = 0.10 . H...
You wish to test the following claim ( H a H a ) at a significance level of α = 0.10 α = 0.10 . H o : p 1 = p 2 H o : p 1 = p 2 H a : p 1 > p 2 H a : p 1 > p 2 You obtain 432 successes in a sample of size n 1 = 681 n 1 = 681 from the first population. You obtain...
In order to conduct a hypothesis test for the population
proportion, you sample 450 observations that result in 189
successes. (You may find it useful to reference the
appropriate table: z table or t
table)
H0: p ≥ 0.45;
HA: p < 0.45.
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 =
a-2....
In order to conduct a hypothesis test for the population proportion, you sample 320 observations that result in 128 successes.(You may find it useful to reference the appropriate table: z table or t table HO pz 0.45; HA: p < 0.45. 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.) est statistic a-2. Find the p-value....
Suppose a random sample of 100 observations from a binomial population gives a value of p = 0.45 and you wish to test the null hypothesis that the population parameter p is equal to 0.40 against the alternative hypothesis that p is greater than 0.40. Complete parts a through c. a. Noting that p = 0.45, what does your intuition tell you? Does the value of p appear to contradict the null hypothesis? O A. Yes, because p satisfies Hg:p>0.40...
Question 9 2.5 pts Consider the following hypothesis test: H: H: 25 > 25 A sample of 40 provided a sample mean of 26.4. The population standard deviation is 4. What is the value of the test statistic for this test? 2.21 1.96 0.350 1.645 Question 13 2.5 pts Consider a hypothesis test to see if the average student scores in exam 2 is less than their score for exam 1. We calculate our test statistic on the z-table to...
In order to conduct a hypothesis test for the population proportion, you sample 440 observations that result in 220 successes. (You may find it useful to reference the appropriate table: z table or table) He: p > 0.52; HA: p < 0.52. 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 a-2. Find the...
n order to conduct a hypothesis test for the population proportion, you sample 480 observations that result in 264 successes. (You may find it useful to reference the appropriate table: z table or t table) Ho: pz 0.60 HA: p0.60 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 2.24 a-2. Find the p-value....
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