A researcher knows that the average height of Filipino women is 1.525 meters. A random sample of 26 women was taken and was found to have a mean height of 1.56 meters, with a standard deviation of .10 meters. Is there reason to believe that the 26 women in the sample are significantly taller than the others at .05 significance level?

Q: A scrap metal dealer claims that the mean of his sales is “no more than $80,” but an Internal…

A: Given that, Mean= 91 Standard deviation, sigma= 21 Sample size, n=20 Hypothesis,  Ho:  the agent’s…

Q: The time that a shopper spends in the grocery store is normallydistributed, with a mean of 45…

A: Given Information: The time that a shopper spends in the grocery store is normally distributed with…

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

A: Given data,For Man:μ=69.4σ=3.2Age X=75For Woan:μ=64.5σ=3.8Age X=70

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 manufacturer wanted to know if more coupons would be redeemed if they were mailed to the female in…

A: Solution: Given information: n=50 Sample size  xd= 1.5   Difference of sample mean sd= 4.75…

Q: In an all boys school, the heights of the student body are normally distributed with a mean of 68…

A:

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 total cholesterol levels of a sample of men aged 35-44 are normally distributed with a mean of…

A: Given:μ=219 and σ=36.6Sample size = n = 247We have to find how many would you expect to have a total…

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: The time that a shopper spends in the grocery store is normally distributed, with a mean of 65…

A: We have to find given probability..

Q: A student finds that the average price of a movie ticket in Washington is $12.25 and that the…

A: From the provided information, Mean (µ) = $12.25 Standard deviation (σ) = $2 Let X be a random…

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

A:

Q: In a study of employee stock ownership plans, satisfaction by employees is measured and found to be…

A: Given,mean(μ)=4.89standard deviation(σ)=0.63sample size(n)=450

Q: Suppose that the mean and standard deviation of plants height are 130 and 42, respectively, if a…

A:

Q: A sample of assistant professors on the business faculty at state-supported institutions in Ohio…

A: It is given that the mean is 72000 and the standard deviation is 3000.

Q: The starting salary for a computer programmer major has a mean of $39,269 and a standard deviation…

A: Note: Hey there! Thank you for the question. Although the mean and standard deviation of the…

Q: A tire manufacturer claims (based on years of experience with tires) that the mean mileage is…

A: Given: n= 101.0 ,x̄= 31000.0 ,s= 5000.0 µ= 35000.0 ,significance level(∝)= 0.02Now here using…

Q: Suppose math scores on the SAT are normally distributed with a mean of 500 and a standard deviation…

A:

Q: Nationally, patients who go to the emergency room wait an average of 5 hours to be admitted into the…

A: From the provided information, Sample size (n) = 10 Sample mean (x̅) = 8 Standard deviation (s) = 3…

Q: The golf scores for a school team were normally distributed with a mean of 72 and a standard…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: A recent Gallop Poll indicates that 80 % of voting age adults disapprove of Congress. If 700 voting…

A: Let p be the probability that a voting age adult disapproves of Congress. Given that p = 0.80 Let X…

Q: If the mass of 35 dogs in your neighborhood were normally distributed, with a mean of 11.2 kg and a…

A: Given data: Mean = 11.2 kg Standard deviation = 2.8 kg

Q: A local sports magazine reports the mean length of a baseball game to be 175.9 minutes with a…

A: Given, mean, μ= 175.9 minutes standard deviation,  = 27 minutes n = 30

Q: In a certain supermarket, a sample of 60 customers who used a self-service checkout lane averaged…

A: Introduction: Assume that the checkout times of the customers are independent of each other, between…

Q: Nationally, patients who go to the emergency room wait an average of 4 hours to be admitted into the…

A: Given: x¯=5.4s=2.2n=10   a) For this study, we should use t-distribution   b)Null and Alternate…

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

A: Given: Population meanμ=675Sample size(n)=20Sample standard deviation(s)=21

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

A:

Q: A dean at BUC claims that the average age of the students in this college is 25. A random sample of…

A: Note: Thank you for the question. Since it is not mentioned the standard deviation is population…

Q: in a recently conducted study, families reported using an average of 70 gallons of gasoline per…

A:

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

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

Q: A community health plan wishes to estimate the mean number of visits per plan participant in a year.…

A: Given that Margin of Error, E = 2 Population SD = 6.3 Level of confidence = 0.95 The critical value…

Q: a florist ahs a floral shop  in miami  and anotherin san diego. Teh miami shop has a mean daily…

A: We need to compute the z-score to find out which store had the better sales.

Q: ) H0: ?1 − ?2 = 0 Ha: ?1 − ?2 > 0     t=_________ P-value_______   State the conclusion in the…

A:

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

A: Mean (man)=69.8Standard deviation (man)=3.0Mean (woman)=64.1Standard deviation (woman)=3.9

Q: An LED lightbulb manufacturer produces lights with a mean lifespan of 10,000 hours and a standard…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: Suppose the area that can be painted using a single can of spray paint is slightly variable and…

A: It is given that the area that can be painted using a single can of spray paint has a normal…

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

A: Solution-: Given: For Man: For Women: We find who is relatively taller, a 75 inch man or 70 inch…

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: 11 and the standard deviation is 1.5. (a)What is the probability of randomly selecting a man with a…

A:

Q: Suppose the average height of a two year old male is normally distributed with a mean of 34.2 inches…

A: Given, Mean = μ = 34.2standard deviation = σ = 2.9

Q: In a recent​ year, the scores for the reading portion of a test were normally​ distributed, with a…

A: Given data,μ=22.9σ=6.7P(X<18)=?

Q: The 2015 general Social Survey asked a large number of people how much time they spent watching TV…

A: Solution: Given information: n= 39 Sample size s = 2.8 Sample standard deviationμ= 4.2 Population…

Q: It has been reported that the average credit card debt for college seniors at the college  book…

A: Given Information :  It has been reported that the average credit card debt for college seniors at…

Q: In a particular country, the height measurements of ten-year-old children are approximately normally…

A:

Q: at teenagers spent 4.5 hours per week, on average, on the phone. The organization thinks that,…

A: According to the given information in this question We need to identify the correct conclusion

Q: In examining the invoices issued by a company, an auditor finds that the dollar amounts of invoices…

A:

Q: A book publisher claims that its mean book length is 250 pages with a standard deviation of 70…

A:

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

A:

Q: Suppose the area that can be painted using a single can of spray paint is slightly variable and…

A: It is given that the area that can be painted using a single can of spray paint has a normal…

Q: An audit finds that the dollar amounts of invoices have a mean of $1,662 anda standard deviation of…

A: Note : Since you have asked multiple questions, we will solve the first question for you. If you…

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.