Questions 39-40: A company claims that their fridges have an average of 22 gallons of useable...
A company claims that the mean monthly residential electricity consumption in a certain region is more than 890 kilowatt-hours (kWh). You want to test this claim. You find that a random sample of 64 residential customers has a mean monthly consumption of 910 kWh. Assume the population standard deviation is 121 kWh. At a = 0.05, can you support the claim? Complete parts (a) through (e). (a) Identify Ho and Ha. Choose the correct answer below. O B. Ho u...
62, two independent samples of n1 = 8 and n2 = 10 were taken. The data is given below. Both populations are (1 point) In a test of two population means - M1 versus u2 - with unknown variances o normally distributed. Sample From Population 1: 15, 19, 20, 20, 22, 18, 17, 14 Sample From Population 2:11, 14, 15, 23, 25, 12, 20, 14, 22, 17 (a) You wish to test the hypothesis that both populations have the same...
e / Study / A company claims that the mean monthly residential electricity consumption in a certain region is more than 870 kilowatt-hours (kWh). You want to test this claim You find that a random sample of 68 residential customers has a mean monthly consumption of 890 kWh. Assume the population standard deviation is 125 kWh Ala010 can you support the claim? Complete parts (a) through (e) jestio (a) Identify Ho and H. Choose the correct answer below w transcribe...
A credit card company claims that the mean credit card debt for individuals is greater than $5,200. You want to test this claim. You find that a random sample of 38 cardholders has a mean credit card balance of $5,490 and a standard deviation of $675. At a = 0.01, can you support the claim? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify Ho and Ha Which of the...
A company is developing a new high performance wax for cross country ski racing. In order to justify the price marketing wants, the wax needs to be very fast. Specifically, the mean time to finish their standard test course should be less than 5555 seconds for a former Olympic champion. To test it, the champion will ski the course 8 times. The champion's times (selected at random) are 50.450.4, 65.965.9, 49.549.5, 50.950.9, 48.248.2, 48.548.5, 53.853.8, and 43.543.5 seconds to complete...
7.1.37 Question Help A security expert claims that more than 15% of all homeowners have a home security alarm. State Ho and H, in words and in symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. Explain your reasoning State the null hypothesis in words and in symbols. Choose the correct answer below. O A. The null hypothesis expressed in words is, "the proportion of all homeowners who own a home security alarm is...
The dutul in the accompanying table have been collected from a paired sample from a normally distributed populations. The claim is that the first population mean will be at least a large as, of the second Population, The claim will be assumed true unless the dutab strongly suggests otherwise. the mean Data Table - X Sample 1 5.64 7.31 7.51 5.30 5.19 7.55 5.56 8.05 7.24 7.83 7.39 7.43 7.44 6.23 7.50 Sample 2 7.14 8.57 8.55 5.63 2.94 10.67...
can you solve the last (29) question and first 3 (22, 23, 24) questions. VI 16920 01.-0 GID: Name: Use the following description to answer the next 3 questions. in manufacturing a rocket propellant resulted in 3 - 154.2°F and A melting point test of n = 10 specimens of a binder used in manufacturing a rocket propellant resu ne meiting point is normally distributed. Test H:4 = 155 versus He: 155 using a = 0.05 22. (4pts) What is...
An education researcher claims that 54% of college students work year-round. In a random sample of 200 college students, 108 say they work year-round. At a = 0.01, is there enough evidence to reject the researcher's claim? Complete parts (a) through (e) below. (a) Identify the claim and state Ho and Ha Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do...
To test Hy = 35 versus H, #35 a simple random sample of size 40 is obtained Complete parts achow Click the icon to view the table of critical t-values (a) Does the population have to be normally distributed to test this hypothesis by using distribution methods? Why? O A No-there are no constraints in order to perform a hypothesis test OB Yes-since the sample size is at not least 50, the underlying population does not need to be normally...