2 COMPUTE THE VALUE OF TEST STATISTIC
3 STATE A CONCLUSION USE THE A= 0.10 LEVEL OF SIGNIFICANCE ( REJECT OR NOT REJECT )
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2 COMPUTE THE VALUE OF TEST STATISTIC
3 STATE A CONCLUSION USE THE A= 0.10 LEVEL...
1-2.Assume that the height of male students at Anytown State University is normally distributed with (unknown)...
1-2.Assume that the height of male students at Anytown State University is normally distributed with (unknown) mean μ and standard deviation σ-2.4 inches. A random sample of n -9 male students is obtained. 2. a) b) We wish to test H0:μ=69 Hi : μ#69. vs. The average height of the students in the sample was 70.2 inches. Find the p-value. Find the Rejection Region for the test at a -0.05. Tha is, for which values of the sample mean X...
C) COMPUTE THE TEST STATISTIC D ) DETERMINE WHETHER TO REJECT OR NOT e ) STATE...
C) COMPUTE THE TEST STATISTIC
D ) DETERMINE WHETHER TO REJECT OR NOT
e ) STATE A CONCLUSION IF THERE IS ENOUGH EVIDENCE TO SUPPORT
THE STANDARD DEVIATION OF THE IQ SCORES OF 25
IQ scores: Scores on an IQ test are normally distributed. A sample of 25 IQ scores had standard deviation s = 8. The developer of the test claims that the population standard deviation is less than o = 10. Do these data provide sufficient evidence to...
Several years ago, the mean height of women 20 years of age or older was 63.7...
Several years ago, the mean height of women 20 years of age or older was 63.7 inches. Suppose that a random sample of 45 women who are 20 years of age or older today results in a mean height of 63.9 inches. (a) State the appropriate null and alternative hypotheses to assess whether women are taller today (b) Suppose the P-value for this test is 0.12. Explain what this value represents. (C) Write a conclusion for this hypothesis test assuming...
I need help with - Should the null hypothesis be rejected? - at the very bottom....
I need help with - Should the null hypothesis be rejected? - at the very bottom. Thank you! To test the belief that sons are taller than their fathers, a student randomly selects 13 fathers who have adult male children. She records the height of both the father and son in inches and obtains the following data. Are sons taller than their fathers? Use the alpha α = 0.025 level of significance. Note: A normal probability plot and boxplot...
b) Identify the P-value and state the researcher’s conclusion if the level of significance was a...
b) Identify the P-value and state the researcher’s
conclusion if the level of significance was a = 0.001. What is the
P-value?
P = __
State the researcher’s conclusion. Which of the following
is correct?
A. Fail to reject H0, there is not sufficient evidence to conclude
that the mean step pulse of men was less than the mean step pulse
of women.
B. Reject H0, there is not sufficient evidence to conclude that the
mean step pulse of men...
A report included the following information on the heights (in.) for non-Hispanic white females. Age 20-39...
A report included the following information on the heights (in.) for non-Hispanic white females. Age 20-39 60 and older Sample Sample Std. Error Size Mean Mean 868 64.7 0.09 933 63. 1 0 .11 (a) Calculate a confidence interval at confidence level approximately 95% for the difference between population mean height for the younger women and that for the older women. (Use U20-39 - M 60 and older.) Interpret the interval. We are 95% confident that the true average height...
B ) IF MAKING A DECISION, CHOOSE A SIGNIFICANCE LEVEL C ) COMPUTE THE TEST STATISTIC...
B ) IF MAKING A DECISION, CHOOSE A SIGNIFICANCE LEVEL
C ) COMPUTE THE TEST STATISTIC
D) COMPUTE THE P VALUE
E ) IS THERE OR IS THERE NOT ENOUGH EVIDENCE TO CONCLUDE MORE
THAN 73% TWITTER ACCOUNTS
Tweet tweet: An article reported that 73% of companies have Twitter accounts. An economist thinks the percentage is lower at technology companies. She samples 70 technology companies and finds that 43 of them have Twitter accounts. Can she conclude that less than...
A report included the following information on the heights (in.) for non-Hispanic white females Sample Sample...
A report included the following information on the heights (in.) for non-Hispanic white females Sample Sample Std. Error Mean Mean Age Size 20-39 64.7 867 0.09 60 and older 934 63.1 0.11 (a) Calculate a confidence interval at confidence level approximately 95% for the difference between population mean height for the younger women and that for the older women. (Use n39-H0 and older) 2.01 Interpret the interval. OWe are 95% confident that the true average height of younger women is...
Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final...
Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. A test of sobriety involves measuring the subject's motor skills. A study of n = 20 randomly selected sober subjects take the test and produce a mean score of X = 41.0, and we know that o = 3.7. At the 0.01 level of significance, test the claim that the true mean score for all sober subjects is...
To test the belief that sons are taller than their fathers, a student ran- domly selects 13 fathe...
To test the belief that sons are taller than their fathers, a student ran- domly selects 13 fathers who have adult male children. She records the height (in inches) of both the father and the son in the following table. Are sons taller than their fathers? NOTE: A normal probability plot indicated that the differences (X -Y) are approximately normally distributed with no outliers. 70.4 71.8 70.1 70.2 70.4 69.3 eight of Father, Y eight of Son, X eight of...
1-2.Assume that the height of male students at Anytown State University is normally distributed with (unknown) mean μ and standard deviation σ-2.4 inches. A random sample of n -9 male students is obtained. 2. a) b) We wish to test H0:μ=69 Hi : μ#69. vs. The average height of the students in the sample was 70.2 inches. Find the p-value. Find the Rejection Region for the test at a -0.05. Tha is, for which values of the sample mean X...
C) COMPUTE THE TEST STATISTIC
D ) DETERMINE WHETHER TO REJECT OR NOT
e ) STATE A CONCLUSION IF THERE IS ENOUGH EVIDENCE TO SUPPORT
THE STANDARD DEVIATION OF THE IQ SCORES OF 25
IQ scores: Scores on an IQ test are normally distributed. A sample of 25 IQ scores had standard deviation s = 8. The developer of the test claims that the population standard deviation is less than o = 10. Do these data provide sufficient evidence to...
Several years ago, the mean height of women 20 years of age or older was 63.7 inches. Suppose that a random sample of 45 women who are 20 years of age or older today results in a mean height of 63.9 inches. (a) State the appropriate null and alternative hypotheses to assess whether women are taller today (b) Suppose the P-value for this test is 0.12. Explain what this value represents. (C) Write a conclusion for this hypothesis test assuming...
b) Identify the P-value and state the researcher’s
conclusion if the level of significance was a = 0.001. What is the
P-value?
P = __
State the researcher’s conclusion. Which of the following
is correct?
A. Fail to reject H0, there is not sufficient evidence to conclude
that the mean step pulse of men was less than the mean step pulse
of women.
B. Reject H0, there is not sufficient evidence to conclude that the
mean step pulse of men...
A report included the following information on the heights (in.) for non-Hispanic white females. Age 20-39 60 and older Sample Sample Std. Error Size Mean Mean 868 64.7 0.09 933 63. 1 0 .11 (a) Calculate a confidence interval at confidence level approximately 95% for the difference between population mean height for the younger women and that for the older women. (Use U20-39 - M 60 and older.) Interpret the interval. We are 95% confident that the true average height...
B ) IF MAKING A DECISION, CHOOSE A SIGNIFICANCE LEVEL
C ) COMPUTE THE TEST STATISTIC
D) COMPUTE THE P VALUE
E ) IS THERE OR IS THERE NOT ENOUGH EVIDENCE TO CONCLUDE MORE
THAN 73% TWITTER ACCOUNTS
Tweet tweet: An article reported that 73% of companies have Twitter accounts. An economist thinks the percentage is lower at technology companies. She samples 70 technology companies and finds that 43 of them have Twitter accounts. Can she conclude that less than...
A report included the following information on the heights (in.) for non-Hispanic white females Sample Sample Std. Error Mean Mean Age Size 20-39 64.7 867 0.09 60 and older 934 63.1 0.11 (a) Calculate a confidence interval at confidence level approximately 95% for the difference between population mean height for the younger women and that for the older women. (Use n39-H0 and older) 2.01 Interpret the interval. OWe are 95% confident that the true average height of younger women is...
Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. A test of sobriety involves measuring the subject's motor skills. A study of n = 20 randomly selected sober subjects take the test and produce a mean score of X = 41.0, and we know that o = 3.7. At the 0.01 level of significance, test the claim that the true mean score for all sober subjects is...
To test the belief that sons are taller than their fathers, a student ran- domly selects 13 fathers who have adult male children. She records the height (in inches) of both the father and the son in the following table. Are sons taller than their fathers? NOTE: A normal probability plot indicated that the differences (X -Y) are approximately normally distributed with no outliers. 70.4 71.8 70.1 70.2 70.4 69.3 eight of Father, Y eight of Son, X eight of...
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