A rental agent claims that the mean monthly rent,  μ , for apartments on the east side of town is less than  $650 . A random sample of  16  monthly rents for apartments on the east side has a mean of  $645 , with a standard deviation of  $21 . If we assume that the monthly rents for apartments on the east side are normally distributed, is there enough evidence to conclude, at the  0.05  level of significance, that  μ  is less than  $650 ? Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. The null hypothesis: H0:   The alternative hypothesis: H1:   The type of test statistic: (Choose one)ZtChi squareF             The value of the test statistic: (Round to at least three decimal places.)   The p-value: (Round to at least three decimal places.)   Using the 0.05 level of significance, can we conclude that the mean monthly rent for apartments on the east side is less than  $650

The mean number of English courses taken in a two-year time period by male and female college students is believed to be about the same. An experiment is conducted and data are collected from 29 males and 16 females. The males took an average of three English courses with a standard deviation of 0.8. The females took an average of four English courses with a standard deviation of 1.0. Are the means statistically the same? (Assume a 5% level of significance.)

A rental agent claims that the mean monthly rent, μ, for apartments on the east side of town is less than $650. A random sample of 10 monthly rents for apartments on the east side has a mean of $631, with a standard deviation of $24. If we assume that the monthly rents for apartments on the east side are normally distributed, is there enough evidence to conclude, at the 0.05 level of significance, that μ is less than $650? State the null hypothesis H0 and the alternative hypothesis H1 Using the t-test find the value Find the p-value Using the 0.05 level of significance, can we conclude that the mean monthly rent for apartments on the east side is less than $650? Yes or no?

The distribution of the student heights at a large college is approximately bell shaped. If the mean height is 66 inches,and approximately 95% of the heights fall between 32 and 100 inches, then, the standard deviation of the heightdistribution is approximately equal to

The manager of a computer retail store is concerned that his suppliers have been giving him laptop computers with lower than average quality. His research shows that replacement times for the model laptop of concern are normally distributed with a mean of 3.9 years and a standard deviation of 0.6 years. He then randomly selects records on 47 laptops sold in the past and finds that the mean replacement time is 3.7 years. Assuming that the laptop replacement times have a mean of 3.9 years and a standard deviation of 0.6 years, find the probability that 47 randomly selected laptops will have a mean replacement time of 3.7 years or less. P(M≤ 3.7 years) - Enter your answer rounded to 4 decimal places.

A large financial company employs a human resources mamanger who is in charge of employe benefits. The manger wishes to estimate the average dental expenses per employee for the company. She selects a random sample of 60 employee records for the past year and determines that the sample mean of $492. Moreover, it is known from past studies that the population standard deviation for annual dental expenses is $74. Use this data to calculate a 95% cofidence interval for the mean expenses of all employees.

(AKS 24): A technology magazine finds data that suggests the prices of computers with a specific configuration follow an approximately normal distribution with a mean of $895.22 and a standard deviation of $109.30. The magazine wants to describe the percentage of these computers that are priced below $600. WWhat Z-Score should they use? O a) z = 1.3 %3D O b) z = -1.3 c) z = -2.7 %3D d) z = 2.7 Question 2 (1 point) (AKS 24): A set of laptop prices are normally distributed with a mean of $750 and a

(a) State the null hypothesis H, and the alternative hypothesis H . Ho H :0 (b) Determine the type of test statistic to use. (Choose one) (c) Find the value of the test statistic. (Round to three or more decimal places.) (d) Find the p-value. (Round to three or more decimal places.) (e) Using the 0.1 level of significance, can we conclude that the mean monthly rent for apartments on the east side is less than $675? Yes ONo

A national online business magazine reports that the average cost of a speeding ticket in Miami, including court fees, is $220. A local police department claims that this amount has increased. To test their claim, they collect data from a simple random sample of 16 drivers who have been fined for speeding in the last year. Assuming that the distribution of speeding ticket costs is normally distributed and the population standard deviation is $14, is there sufficient evidence to support the police department's claim at the 0.02 level of significance? Copy Data Speeding Ticket Costs in Miami $226 $215 $200 $248 $233 $242 $213 $247 $217 $221 $237 $217 $232 $211 $241 $212 Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Họ : 1 = 220 Hap 220