To test H0: σ=1.5 versus H1: σ>1.5, a random sample of size n=19 is obtained from a population that is known to be normally distributed.
a) If the sample standard deviation is determined to be
,
compute the test statistic.
(b) If the researcher decides to test this hypothesis at the
level of significance, use technology to determine the P-value.
(c) Will the researcher reject the null hypothesis?
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To test H0: σ=1.5 versus H1: σ>1.5, a random sample of size n=19 is obtained from a population that is known to be normally distributed.
To test Ho: σ=4.6 versus H1: σ≠4.6, a random sample of size n=11 is obtained from...
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To test H0: σ = 40 versus H1: σ < 40
To test H0: σ = 40 versus H1: σ < 40, a random sample of size n=27 is obtained from a population that is known to be normally distributed. (a) If the sample standard deviation is determined to be s = 28.8, compute the test statistic (b) if the researcher decides to test this hypothesis at the a=0.05 level of significance, use technology to determine the P-value.(c) Will the researcher reject the null hypothesis?
#1 part A.) To test H0: μ=100 versus H1: μ≠100, a random sample of size n=20...
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3. (25 points) To test Ho: σ 0.35 versus H1: σ < 0.35, a random sample...
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help please !! To test Ho: 0 = 2.3 versus H: > 2.3, a random sample...
help please !!
To test Ho: 0 = 2.3 versus H: > 2.3, a random sample of size n=20 is obtained from a population that is known to be normally distributed. (a) If the sample standard deviation is determined to be s 3.1. compute the test statistic (b) of the researcher decides to test this hypothesis at the a= 0.05 level of significance, use technology to determine the P-value. (c) Will the researcher reject the null hypothesis? (a) The test...
To test Ho: σ= 2.4 versus H 1 : σ 12.4, a random sample of size...
To test Ho: σ= 2.4 versus H 1 : σ 12.4, a random sample of size n 21 is obtained from a population that is known to be normally distributed. (a) If the sample standard deviation is determined to be s 1.2, compute the test statistic. x8-D (Round to three decimal places as needed.) (b) If the researcher decides to test this hypothesis at the α 0.05 level of significance, determine the critical values. The critical values are χ2025-Dand 9751...
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A random sample of size n= 15 obtained from a population that is normally distributed results in a sample mean of 45.8 and sample standard deviation 12.2. An independent sample of size n = 20 obtained from a population that is normally distributed results in a sample mean of 51.9 and sample standard deviation 14.6. Does this constitute sufficient evidence to conclude that the population means differ at the a = 0.05 level of significance? Click here to view the...
To test Ho: u = 20 versus Hy: u<20, a simple random sample of size n= 16 is obtained from a population that is known...
To test Ho: u = 20 versus Hy: u<20, a simple random sample of size n= 16 is obtained from a population that is known to be normally distributed. Answer parts (a)-(d). Click here to view the t-Distribution Area in Right Tail. (a) If x = 18.1 and s = 4.1, compute the test statistic. t (Round to two decimal places as needed.) (b) Draw a t-distribution with the area that represents the P-value shaded. Which of the following graphs...
1. Ho: μ 100 versus H1: μ # 100, a simple random sample of size n...
1. Ho: μ 100 versus H1: μ # 100, a simple random sample of size n 23 To test is obtained from a population that is known to be normally distributed: (a) If 104.8 and s-9.2, compute the test statistic. (b) If the researcher decides to test this hypothesis at the a 0.01 level of significance, determine the critical values. (c) Draw ar-distribution that depicts the critical region. (d) Will the researcher reject the null hypothesis? Why? Then state the...
To test Ho: p= 100 versus Hy: p* 100, a simple random sample size of n...
To test Ho: p= 100 versus Hy: p* 100, a simple random sample size of n = 20 is obtained from a population that is known to be normally distributed. Answer parts (a)-(d). Click here to view the t-Distribution Area in Right Tail. (a) If x = 105.4 and s= 9.1, compute the test statistic. (Round to three decimal places as needed.) ta (b) If the researcher decides to test this hypothesis at the a=0.01 level of significance, determine the...
3. (25 points) To test Ho: σ 0.35 versus H1: σ < 0.35, a random sample of size n = 41 is obtained from a population that is known to be normally distributed a. If the sample standard deviation is determined to be s 0.23, compute the test statistic. (5 pts) b. If the researcher decides to test this hypothesis at the a 0.01 level of significance , determine the critical value. (5 pts) c. Draw a chi-square distribution and...
help please !!
To test Ho: 0 = 2.3 versus H: > 2.3, a random sample of size n=20 is obtained from a population that is known to be normally distributed. (a) If the sample standard deviation is determined to be s 3.1. compute the test statistic (b) of the researcher decides to test this hypothesis at the a= 0.05 level of significance, use technology to determine the P-value. (c) Will the researcher reject the null hypothesis? (a) The test...
To test Ho: σ= 2.4 versus H 1 : σ 12.4, a random sample of size n 21 is obtained from a population that is known to be normally distributed. (a) If the sample standard deviation is determined to be s 1.2, compute the test statistic. x8-D (Round to three decimal places as needed.) (b) If the researcher decides to test this hypothesis at the α 0.05 level of significance, determine the critical values. The critical values are χ2025-Dand 9751...
A random sample of size n= 15 obtained from a population that is normally distributed results in a sample mean of 45.8 and sample standard deviation 12.2. An independent sample of size n = 20 obtained from a population that is normally distributed results in a sample mean of 51.9 and sample standard deviation 14.6. Does this constitute sufficient evidence to conclude that the population means differ at the a = 0.05 level of significance? Click here to view the...
To test Ho: u = 20 versus Hy: u<20, a simple random sample of size n= 16 is obtained from a population that is known to be normally distributed. Answer parts (a)-(d). Click here to view the t-Distribution Area in Right Tail. (a) If x = 18.1 and s = 4.1, compute the test statistic. t (Round to two decimal places as needed.) (b) Draw a t-distribution with the area that represents the P-value shaded. Which of the following graphs...
1. Ho: μ 100 versus H1: μ # 100, a simple random sample of size n 23 To test is obtained from a population that is known to be normally distributed: (a) If 104.8 and s-9.2, compute the test statistic. (b) If the researcher decides to test this hypothesis at the a 0.01 level of significance, determine the critical values. (c) Draw ar-distribution that depicts the critical region. (d) Will the researcher reject the null hypothesis? Why? Then state the...
To test Ho: p= 100 versus Hy: p* 100, a simple random sample size of n = 20 is obtained from a population that is known to be normally distributed. Answer parts (a)-(d). Click here to view the t-Distribution Area in Right Tail. (a) If x = 105.4 and s= 9.1, compute the test statistic. (Round to three decimal places as needed.) ta (b) If the researcher decides to test this hypothesis at the a=0.01 level of significance, determine the...
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