A tourist agency in Manila claims the mean daily cost of meals and lodging for a family of 4 traveling in Korea is at most 655 dollars with a standard deviation of 40 dollars. You work for a consumer protection advocate and want to test this claim. In a random of 56 families of 4 traveling in Korea, the mean daily cost of meals and lodging is 667 dollars. At alpha=1%, do you have enough evidence to reject the tourist agency claim?

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: In a latest survey conducted by a 3rd party company, excessive intakes of sodium may lead to ulcers,…

A: The sample size is 20, sample mean is 244, sample standard deviation is 24.5.

Q: A manufacturer of hard safety hats for construction workers is concerned about the mean and the…

A: Given information Population mean, µ = 800 pounds Population standard deviation, σ = 40 pounds…

Q: A national grocery store chain wants to test the difference in the average weight of turkeys sold in…

A: Given data: Significance level = 0.01 Claim : at 1% level of significance to determine whether there…

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

A: Solution: Given information: n= 20 Sample size x = 244  Sample mean s = 24.5 Sample standard…

Q: A survey found that the average hotel room rate in Luzon is ₱2,400 and the average room rate in…

A: Given problem Given that   A survey found that the average hotel room rate in Luzon is ₱2,400 and…

Q: an oceanographer claims that the mean dive duration of a north atlantic right whale is 11.5 minutes.…

A: From the given information, Sample size n =34 the Sample mean, x̅=12.2 minutes the Sample standard…

Q: In a mid-size company, the distribution of the number of phone calls answered each day by each of…

A:

Q: A sample of 81 Tillamook strawberries has am ean number of seed of 213, with a standard deviation of…

A: We have to complete hypothesis testing..

Q: A brewery distributes beer in bottles labeled 32oz. The local Consumer Association randomly selects…

A: Given  Population mean μ=32, sample mean x̄=31, n=sample size=30, population standard…

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

Q: A computer manufacturer claimed that the mean weight of their laptops is 5.5 pounds. A sample of 125…

A: Given Information: Population mean (u) = 5.5 pounds Standard Deviation (s) = 1.1 pounds Sample mean…

Q: An automobile insurance company claims that its rates for teenage drivers average $470 less per year…

A: Given: population mean = 470sample size=30sample mean = 435std deviation =65

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: A tourist agency in Manila claims the mean daily cost of meals and lodging for a family of 4…

A:

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

A: The objective is to state null and alternative hypothesis and find the value of test statistic for…

Q: In crash tests at five miles per hour, the mean bumper repair cost for 15 small cars is 576 dollars…

A: Hey there! Thank you for posting the question.  Since you have posted a question with multiple…

Q: A factory manufacturing light emitting diode LED bulbs claims that their light bulbs last for 50,000…

A: A confidence interval is an inference method which gives the range of plausible values of the…

Q: An online survey company claims their surveys take on average less than 20 minutes to complete.…

A: Ans: The test we performed came to the opposite conclusion, so we made Type I error.  By the larger…

Q: it is claimed that personal vehicle is driven 24500 km per year. would you agree with this claim if…

A:

Q: A company which produces batteries claims that the life expectancy of their batteries is at least 90…

A: Given Information: Claim: The life expectancy of batteries is at least 90 hours. Sample size n=40…

Q: A company claims that, the mean battery life of their cell phone is at least 5 hours and standard…

A: Given,sample size(n)=25sample mean(x¯)=4.8standard deviation(σ)=0.5α=0.04H0:μ<5H1:μ≥5

Q: When Brooklyn commutes to work, the amount of time it takes her to arrive is normally distributed…

A: Given that.   X~N( μ , ?^2 )   μ=54     , ?=4   Z-score =( x - μ )/?

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

A: Given Information: The distribution of number of daily requests is bell shaped and has a mean of 55…

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: According the the U.S. Department of Education, full-time graduate students receive an average…

A:

Q: A certain breed of dog is 12 inches at the shoulder on average, with a standard deviation of 2, I…

A: Given,sample size(n)=36sample mean(x¯)=12.5population standard deviation (σ)=2α=0.05

Q: A telecommunications company claims that households receive an average of 40 telephone calls per…

A: From the given information, μ=40 calls σ=5 callsn=35x=36α=0.10

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

A:

Q: A survey conducted in Mega Manila with a sample of 350 gasoline stations found that the price…

A: According to the empirical rule [Also known as 68-95-99.7 rule]. Therefore, the probability that…

Q: In a mid-size company, the distribution of the number of phone calls answered each day by each of…

A: Empirical rule: The probability that the observation under the normal curve lies within 1 standard…

Q: A national grocery store chain wants to test the difference in the average weight of turkeys sold in…

A: The following information has been given: n1=20             n2=24x¯1=17.53       x¯2=14.89s1=3.2…

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: The amount of money raised by Clayton State teams for the Statistics Games is normally distributed,…

A: Chebyshev's theorem and empirical rule are used to calculate the percentages of data lies within…

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: 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: The police department of a U.S. city reported that the mean number (μ) of auto thefts per…

A:

Q: a used car dealership says that the mean price of a three year old sports utility car is $20,000.…

A:

Q: A random sample of 89 tourists in Chattanooga (C) showed that they spent an average of $2860 (in a…

A:

Q: A manufacturer of hard safety hats for construction workers is concerned about the mean and the…

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: A CHED commissioner claims that the average cost of one year's tuition for all private colleges in…

A: Given that sample size n = 15 Sample mean = 31080 Sample SD = 400 Level of significance = 0.01

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

A:

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

A:

Q: The CEO of a large financial institution claims that, on average, their clients invest more than…

A: Null hypothesis:   H0: µ≤150,000   Alternative hypothesis:   Ha:µ>150,000.

Q: It is claimed that personal vehicle is driven 24500 km per year. Would you agree with this claim if…

A: Given data: Population mean = 24500 Sample size = 100 Sample mean = 28000 Sample standard deviation…

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

A: Yes, There is enough evidence to reject the directors claim at 5% l.o.s.

Q: A local church parish wants to raise money to add to their campus. In a sample from a previous fund…

A: Consider that p1, p2 is the true proportions of people who are contributing in previous fund-raising…

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

A: