Solution :
= 15
=14.08
=3
n = 50
This is the two tailed test .
The null and alternative hypothesis is ,
H_{0} : = 15
H_{a} : 15
a ) Test statistic = z
= ( - ) / / n
= (14.08 - 15 ) / 3 / 50
= −2.168
Test statistic = z = − 2.17
b ) P-value =0.0301
c ) = 0.05
P-value <
0.0301 < 0.05
Reject the null hypothesis .
There is sufficient evidence to conclude that 15
d ) It is observed that ∣z∣ = 2.168 > zc=1.96,
There is sufficient evidence to conclude that 15
3. -16 points ASWSBE13 9.E.011. My Notes + Ask Your Teacher You may need to use...
42. + -13 points ASWSBE14 9.E.013. You may need to use the appropriate appendix table or technology to answer this question. Consider the following hypothesis test. Hoius 50 Hu > 50 A sample of 60 is used and the population standard deviation is 8. Use the critical value approach to state your conclusion for each of the following sample results. Use a = 0.05. (Round your answers to two decimal places.) (a) x = 52.3 Find the value of the...
1. + 1/3 points Previous Answers ASWSBE13 10.E.002. My Notes + Ask Your Teacher You may need to use the appropriate appendix table or technology to answer this question. Consider the following hypothesis test. Ho: M1 - 4250 Ha: \, - uz > 0 The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 ny = 40 | n2 = 50 ¥1 = 25.1 +2 = 22.8 01 = 5.5 02 = 6...
-6 points You may need to use the appropriate appendix table or technology to answer this question. Consider the following hypothesis test. ASWSBE 139E.011. 3. + Ho' μ-15 Ha: μ * 15 A sample of 50 provided a sample mean of 14.09. The population standard deviation is 3 (a) Find the value of the test statistic. (Round your answer to two decimal places.) (b) Find the p-value. (Round your answer to four decimal places.) p-value (c) At α-0.05, state your...
-6 points You may need to use the appropriate appendix table or technology to answer this question. Consider the following hypothesis test. ASWSBE 139E.011. 3. + Ho' μ-15 Ha: μ * 15 A sample of 50 provided a sample mean of 14.09. The population standard deviation is 3 (a) Find the value of the test statistic. (Round your answer to two decimal places.) (b) Find the p-value. (Round your answer to four decimal places.) p-value (c) At α-0.05, state your...
3. +-16.66 points ASWSBE13 13.E.011 My Notes Ask Your Teacher You may need to use the appropriate technology to answer this question. Four different paints are advertised as having the same drying time. To check the manufacturer's claims, five samples were tested for each of the paints. The time in minutes until the paint was dry enough for a second coat to be applied was recorded. The following data were obtained Paint 1 Paint 2 Paint 3 Paint 4 129...
1. -116.66 points ASWSBE13 12.E.001 My Notes Ask Your Teacher You may need to use the appropriate technology to answer this question Use the sample data below to test the hypotheses Ha: not all population proportions are equal where p, is the population proportion of Yes responses for population i. 145 140 111 Yes No 95 140 119 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four...
4.+-16.66 points ASWSBE13 13.E.013.MI My Notes Ask Your Teacher You may need to use the appropriate technology to answer this question The following data are from a completely randomized design TreatmentTreatment Treatment 31 29 29 26 30 29 34 37 36 37 49 Sample mean 37 Sample variance 3.50 6.50 6.50 (a) At the α 0.05 level of significance, can we reject the null hypothesis that the means of the three treatments are equal? State the null and alternative hypotheses...
You may need to use the appropriate technology to answer this question. Consider the following hypothesis test. Hou 55 H: 4 < 55 A sample of 35 is used. Identify the p-value and state your conclusion for each of the following sample results. Use a = 0.01. (a) = 54 and 5 = 5.2 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value =...
44. You may need to use the appropriate technology to answer this question. Consider the follovring hypothesis test. A sample of 36 is used. Identify the p-value and state your conclusion for each of the following sample results. Use α = 0.01. (a)x44 and s5.1 Find the value of the test statistic. (Round your ansvwer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value State your conclusion. O Do not reject Ho. There is...
You may need to use the appropriate appendix table or technology to answer this question Consider the following hypothesis test H0: p = 0.20 Ha: p # 0.20 A sample of 400 provided a sample proportion p = 0.185 (a) Compute the value of the test statistic. (Round your answer to two decimal places.) (b) What is the p-value? (Round your answer to four decimal places.) p-value- (C) 0.05, what is your conclusion? 0 Reject H0. There is insufficient evidence...