A fast-food franchiser is considering building a restaurant at a certain location. According to a financial analysis, a site is acceptable only if the number of pedestrians passing the location averages more than 100 per hour. A random sample of 50 hours produced a mean of 110 and a standard deviation of 12 pedestrians per hour. Do these data provide sufficient evidence to establish that the site is acceptable? Use a = 0.05.

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 (%) P(49<X<79)= ?  X~N(μ=49,σ2=102)

Q: A manufacturer claims that the calling range( in feet) of its 900 mhz cordless telephone is greater…

A: The provided information are:

Q: In a certain city, the average 20- to 29-year old man is 72.5 inches tall, with a standard deviation…

A:

Q: On their website, a property management company states that the mean monthly rent for apartments on…

A: Given,sample size(n)=21sample mean(x¯)=720standard deviation(s)=20α=0.05

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A:

Q: A job placement director claims that the average starting salary for nurse is $25000. A sample of 15…

A: The null and the alternative hypothesis are based on the population mean: H0 : μ = 25000H1 : μ ≠…

Q: A sample of 23 provided a sample mean of 158 and a sample standard deviation of 20. Find the value…

A: Given that Sample size n = 23 Sample mean = 158 Sample SD = 20

Q: To compare the battery life of Duracell versus Energizer batteries, a sample of 140 Duracell…

A: Given: n1 = 140 X1 = 345 S1 = 95 n2 = 125 X2 = 280 S2 = 86 α = 0.01 Formula Used: Test-statistic t =…

Q: A tool company claims that the mean number of defective screws they produce per box is 72. The mean…

A:

Q: A shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executive…

A: Given information: The investigator is specially interested to test whether the mean tenure for a…

Q: A shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executive…

A:

Q: A recent study of debt among college graduates reported that the average debt accumulated by…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A recent survey reported that small businesses spend 24 hours a week marketing their business. A…

A: Given information: Sample size(n)=80. Sample mean(X¯)=23.0 Population standard deviation(σ)=5.4.…

Q: The waiting time for patients at a local walk-in health clinic follows a normal distribution with a…

A: n = sample size = 50 x̄ = sample mean  = 14.25 Minutes μ = population mean = 15 Minutes σ =…

Q: In a certain city, the average 20- to 29-year old man is 69.8 inches tall, with a standard deviation…

A: For an average 20-29 year old man: mean = 69.8 standard dev = 3.2 For an average 20 - 29 year old…

Q: A shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executive…

A: Given information- Population mean, μ = 9 years Sample size, n = 95 Significance level, α = 0.01…

Q: A job placement director claims that the average starting salary for nurse is $26000. A sample of 18…

A: Given,sample size(n)=18sample mean(x¯)=25620standard deviation(s)=680α=0.05

Q: A recent survey reported that small businesses spend 26 hours a week marketing their business. A…

A:

Q: In a certain city, the average 20- to 29-year old man is 72.5 inches tall, with a standard deviation…

A: From the provided information, The height of men is normally distributed with mean (µ) = 72.5 inches…

Q: According to a dietary study, high sodium intake may be related to ulcers, stomach cancer and…

A:

Q: A trucking company determined that the distance traveled per truck per year is normally​…

A: Given information- Mean weight of the bears, µ = 80 thousand miles Population standard deviation, σ…

Q: In a particular community, it is claimed that the mean household water usage for a particular month…

A:

Q: 3) A job placement director claims that the average starting salary for nurse is $25000. A sample of…

A:

Q: On their website, a property management company states that the mean monthly rent for apartments on…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: A recent study of debt among college graduates reported that the average debt accumulated by…

A: x1 = 27800 x2 = 11200 n1 = 80 n2 =245 s1 = 2087 s2 = 2101

Q: In a certain city, the average 20- to 29-year old man is 69.4 inches tall, with a standard deviation…

A: Given: For Man:      Avg = 69.4      SD = 3.2 For Women:       Avg = 64.3        SD = 3.9 Who is…

Q: A quick survey of peanut butter prices had standard deviation and mean of $0.26 and $3.68,…

A:

Q: In a certain city, the average 20- to 29-year old man is 69.8 inches tall, with a standard deviation…

A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: On their website, a property management company states that the mean monthly rent for apartments on…

A: Parametric test are used to study the population when the size is larger by taking sample. If the…

Q: Find the corresponding​ z-scores. Who is relatively​ taller, a​ 75-inch man or a​ 70-inch woman?…

A: *Answer:

Q: According to a dietary study, high sodium intake may be related to ulcers, stomach cancer and…

A:

Q: A job placement director claims that the average starting salary for nurse is $25000. A sample of 15…

A:

Q: Suppose a locally owned coffee shop had an average daily revenue of $4,191 before some ordinance was…

A: Given Data: x¯=3922s=750n=30   Null and Alternate Hypothesis: H0: μ=4191 H1: μ≠4191

Q: A recent survey reported that small businesses spend 26 hours a week marketing their business. A…

A: We have to find test statistic.  z = x¯-μσn Where , x¯ is sample mean  σ is population standard…

Q: The waiting time for patients at a local walk-in health clinic follows a normal distribution with a…

A: We have to find hypothesis..

Q: In a certain​ city, the average​ 20- to​ 29-year old man is 72.5 inches​ tall, with a standard…

A: z- score for a 75-inch man =  0.833 z- score for a​ 70-inch woman = 1.447

Q: certain​ city, the average​ 20- to​ 29-year old man is 69.4 inches​ tall, with a standard deviation…

A: Given: For females Mean μf=64.5 Standard deviation σf=3.8 Observed value (Xf) = 70 For males Mean…

Q: In a certain​ city, the average​ 20- to​ 29-year old man is 72.5 inches​ tall, with a standard…

A: 72.5 3.1 75 64.3 3.8 70

Q: 1. A particular brand of tires claims that its deluxe tire averages at least 55,000 miles before it…

A: Given : n(sample size)=45 Alpha(level of sig.)=0.05

Q: A recent report indicates that 2-year-old children from the well-educated suburban families watched…

A: From the provided information, Mean (µ) = 60 minutes Standard deviation (σ) = 25 minutes Let X be a…

Q: A local Chamber of commerce Claims that the mean family income in aſcity is $12,250 An economist…

A: The one-sample z-test is used to test whether the mean of a population is greater than, less than,…

Q: A microwave company claims that their microwaves can pop popcorn in under 2.25 minutes. After 134…

A: Ho: their microwaves can pop popcorn in under 2.25 minutes.  H1: their microwaves can not pop…

Q: A non-symmetric dataset has a mean of 200 and a standard deviation of 15.  Find an upper bound for…

A: Given: μ = 200 σ = 15 Solution: First calculate one sigma limit  μ ± σ = 200 ±15=185, 215 Two sigma…

Q: In a particular community, it is claimed that the mean household water usage for a particular month…

A: Hypothesis testing is conducted for the parameters of the population like population mean,…

Q: A consumer protection group suspects that a particular 285-gram packages of tofu actually weighs…

A:

Q: A radio station claims that the amount of advertising per hour of broadcast time has an average of…

A: It is given that, A radio claims that the amount of advertising per hour of broadcast time has an…

Q: A marine biologist claims that a harbor seal's average dive time is at least 5.8 minutes. A random…

A:

Q: A realtor claims that in a certain neighborhood, the average house is worth $200,000. Having been…

A:

Q: On their website, a property management company states that the mean monthly rent for apartments on…

A: According to guideline we solve first three subparts when given multiple subparts.

Q: Cushman and Wakefield reported that the average annual rent for office space in Tampa was $17.63 per…

A: H0 : ? =17.63     H1 : ? ≠17.63     Population mean = ? = 17.63 Sample S.D = s =3.64…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.