State clearly your null and alternative hypothesis. b) Calculate the value of the test statistic. c) Find the p-value associated with this test.

Q: A company has a policy of retiring company cars; this policy looks at number of miles driven,…

A:

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: The normal distribution is the bell shaped distribution which is centred at the mean. This is also…

Q: A survey in the N.Y. Times Almanac finds the mean commute time (one way) is 25.4 minutes for the 15…

A: Denote μ as the population mean amount spent on food per week by a family of four.

Q: The typical amount of sleep per night for college students has a bell-shaped distribution with a…

A: Mean()=7.3standard deviation()=1.5

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: Given that  Mean = M = 65 , Standard deviation = SD = 7 X ~ Normal (M = 65 , SD = 7)

Q: A sociologist surveys 50 randomly selected citizens in each of two town to compare the mean number…

A: Given information: A survey compares the mean number of hours of voluntary work done by adults in…

Q: The maintenance department at the main campus of a large state university receives daily requests to…

A: bell shaped distribution μ = 54σ = 3   empirical rule : approximately 68-95-99.7% data fall within…

Q: l plant at the main campus of a large state university recieves daily requests to replace florecent…

A: The distribution of the number of daily requests with a mean of 46 and a standard deviation of 9 is…

Q: A company has a policy of retiring company cars; this policy looks at number of miles driven,…

A: Mean=41, standard deviations=4

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: Given: X~N(μ,σ)μ=64σ=10

Q: A manufacturer of metal fasteners expects to ship an average of 1197.00 boxes of fasteners per day.…

A: We have given that  Sample size n=65  Sample mean = 1193 Standard deviation =

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: Solution: Let X be the number of daily requests. From the given information, X follows normal…

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: We first find the z-score of 45 and 57.z score of 45=45-456=0z score of 57=57-456=2

Q: winter months in Virginia have a mean of 62o F. A meteorologist in southwest Virginia believes the…

A: We have given that  Sample size n= 30 Sample mean = 59 Standard deviation = 6.21 P-value = 0.007

Q: In a random sample of 23 private school teachers in queens county the average teaching experience is…

A:

Q: In a foreign country, beginning teachers' salaries have a mean of $55,080 with a standard deviation…

A:

Q: The approximate percentage of lightbulb replacement requests numbering between 54 and 58 is  %. (Do…

A:

Q: A regional radio station recently conducted a survey amongst a large sample of bus commuters to find…

A: Define X as listening time’ found from the survey is normally distributed with a mean of 20 minutes…

Q: Data show that men between the ages of 20 and 29 in a general population have a mean height of 69.3…

A: Given that, Sample size n=20 Sample standard deviation s=2.064

Q: A company has a policy of retiring company cars; this policy looks at number of miles driven,…

A:

Q: ppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.42 and a…

A: Given data,Mean μ=8.42sd    σ=1.52P(6.9<X<9.94)=?

Q: A company has a policy of retiring company cars; this policy looks at number of miles driven,…

A: The mean is 61 and standard deviation is 6.The distribution of the number of months in service for…

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: Let X be the number of daily requests following bell-shaped distribution with mean 57 and standard…

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: Given information : Mean = x = 46 Standard deviation = σ = 7

Q: A company has a policy of retiring company cars; this policy looks at number of miles driven,…

A: Given,Mean, μ = 37 months.Standard deviation, σ = 9 months.

Q: The maintenance department at the main campus of a large state university receives daily requests to…

A: Given that the number of daily requests is bell-shaped.  Let X represents the number of daily…

Q: The physical plant at the main campus of a large state university receives daily requests to replace…

A: Given, The distribution of the number of daily requests is bell shaped with mean of 52 and standard…

Q: A sports science group claims that due to improved training methods, professional cyclists burn a…

A:

Q: The maintenance department at the main campus of a large state university receives daily requests to…

A:

Q: The physical plant at the main campus of a large state university receives daily requests to replace…

A: We want to find the probability by using emperical rule

Q: e. The average number of calls per minute dur WAT lla IL

A: Given Data Population Mean,μ = 24.0 Population Standard Deviation,σ = 3.0

Q: Suppose a tire manufacturer wants to set a mileage guarantee on its new XB 70 tire. Tests revealed…

A: Given that, The population mean is, μ=48000 miles The population standard deviation is, σ=2050 miles…

Q: The maintenance department at the main campus of a large state university receives daily requests to…

A: Let X denotes the number of Daily requests for replacing the fluorescent light bulbs then we are…

Q: The maintenance department at the main campus of a large state university receives daily requests to…

A: In the given scenario,  daily request for the replacement of light bulbs in the university was…

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: 34%Explanation:We have the data:μ=63σ=4LL=63UL=67 Now, we are asked what is the approximate…

Q: The maintenance department at the main campus of a large state university receives daily requests to…

A: 68-95-99.7-rule: Let X be an observation from a normal distribution, having mean µ and standard…

Q: A certain university's Wide Area Telephone Service (WATS) line can handle as many as 20 calls per…

A: The question is about normal distribution Given : Avg. no. of calls per minute during peak period (…

Q: The maintenance department at the main campus of a large state university receives daily requests to…

A: We can use the fact that 68-95-99.7 rule suggest that within µ - 2σ and µ + 2σ 95% area of the curve…

Q: A manufacturer of plasma has determined that the televisions require servicing after a mean of 67…

A: Let x be the length of warranty should be offered which follows normal distribution with mean 67 and…

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A:

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: Given: μ=63σ=5

Q: The maintenance department at the main campus of a large state university receives daily requests to…

A: Given Information: Mean (x) = 36  Standard deviation (s) = 5  The percentage of lightbulb…