The time that a shopper spends in the grocery store is normally distributed, with a mean of 65 minutes and a standard deviation of 15 minutes. For a sample of 50 shoppers, what is the probability that the mean time spent in the grocery store is more than 64 minutes?

Q: Among the workers at a large factory, the number of sick days taken per year is normally…

A: Given that, Among the workers at a large factory, the number of sick days taken per year is normally…

Q: According to a survey, the average height of NBA players is 78 in. with a standard deviation of 7…

A: We have given that,  X is random variable are normally distributed with average or mean (mu) = 78…

Q: Find the probability that a randomly selected high school student who took the reading portion of…

A:

Q: The weight of arctic polar bears is normally distributed with a mean of 980 pounds and a standard…

A: we have given that, the weight of arctic polar is normally distributed with mean (mu)= 980, and…

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: Given a test is normally distributed with a mean of 30 and a standard deviation of 6: What is the…

A: Let's assume X = score in the test.  As given X ~ N ( mean = 30 , standard deviation = 6)  It is…

Q: A canning company that cans pineapple juice has a machine that automatically fills 16-ounce cans.…

A: Let X denote the amount of fill per can. Given that X follows N(mean = 16, SD = 1), then Z = (X -…

Q: The average public high school has 468 students with a standard deviation of 87. If a public school…

A: Given, mean=μ=468 and standard deviation=σ=87.

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: The number of crackers in a box of Crackerbox Crackers is normally distributed with a mean of 75 and…

A: The provided information is  µ=75 σ=2 P(X>76) P(X>76)=P(X-µσ>76-752)=P(z>0.5)=0.3085The…

Q: The time it takes a computer repair company to diagnose a computer follows a normal distribution…

A: Given data  X = time taken for computer repair company to diagnose a computer μ=50   σ=12…

Q: normally distributed with a mean of 28 ounces and a standard deviation of 1 ounce.  What is the…

A: From the available information, the amounts of boxed cereal are normally distributed with a mean of…

Q: A manager from a certain well known department store found out the money their customers carry into…

A: From the given information,   Mean = 258 Standard deviation = 35

Q: According to the study, the average number of hours that the student spent studying per week in the…

A: From the provided information, Mean (µ) = 56 hours Standard deviation (σ) = 14 hours X~N (56, 14)

Q: A marine researcher claims that the stomachs of blue crabs from one location contain more fish than…

A: From the provided information,

Q: The heights of 100 high school students are measured, with a mean of 175 cm and a standard deviation…

A:

Q: The reading speed of second grade students is approximately normal, with a mean 83 WPM and a…

A: Given,   Mean = 83 Standard deviation = 11

Q: Furnace repair bills are normally distributed with a mean of 263 dollars and a standard deviation of…

A: Here, µ = 263 and σ = 25.

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

A: Given that, Mean = 22.9 Standard deviation = 6.7

Q: The weight of a bag of sugar is normally distributed with mean of 550g and a standard deviation of…

A:

Q: A recent study of teacher salaries in rural areas showed that the average salary was $30,000/year…

A:

Q: he reading speed of second grade students in a large city is approximately​ normal, with a mean of…

A: P(X>96)=?

Q: The average public elementary school has 468 students with a standard deviation of 87. If a random…

A: Given: Mean=μ=468 Standard deviation=σ=87

Q: The time student spends on his/her homework is normally distributed with the mean of 122 minutes and…

A: From the given information, the mean value is 122 minutes and standard of 53. That is,  μ=122σ=53

Q: The average outstanding bill for delinquent customer accounts for a national department store again…

A:

Q: A certain pharmacy sells facemask by the box. Since the pandemic, the demand for these facemasks can…

A: The given average number of boxes sold on a typical day i.e. μ=140 And the standard deviation σ=24…

Q: goods

A: Let X be the random variable such that  cholesterol content of a certain canned goods. The average…

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A:

Q: A 120-watt fluorescent light has an average brightness of 1986 lumens, with a standard deviation of…

A: Given that,  μ=1986,σ=94 The probability that a 120-watt fluorescent light will have a brightness…

Q: If we know that the length of time it takes a college student to find a parking spot in the library…

A: Consider a random variable X which, follows normal distribution, indicates the time to find 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: The life expectancy of a particular brand of tire is normally distributed with a mean of 60,000 and…

A:

Q: According to the National Association of Colleges and Employers, the 2015 mean starting salary for…

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

Q: A census of the labor force in a large metropolitan area found that the time it takes for people to…

A:

Q: The time needed to complete a final examination in a particular college course is normally…

A: Let X be the random variable from normal distribution with mean (μ) = 160 minutes standard deviation…

Q: According to the U.S. Energy Administration, the mean monthly household electric bill in the United…

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

Q: In an article about the cost of health care, Money magazine reported that a visit to a hospital…

A: Given data,μ=328σ=92P(X>500)=?

Q: In a recent study, the Centers for Disease Control and Prevention reported that the diastolic blood…

A: given that mean(μ)= 80.5 standard deviation (σ) = 9.9

Q: According to the American Time Use Survey results released by the Bureau of Labor Statistics on June…

A: Given : μ = 168 , σ= 20 and n= 400       By Central Limit Theorem, x̅ follows a Normal…

Q: The annual per capita consumption of bottled water was 33.5 gallons. Assume that the per capita…

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: An electrical appliance made by company A has an average life of 2500 hours, with a standard…

A: Given : μ1 = 2500μ2 = 2300n1 = 300n2 = 200σ1 = 500σ2 = 800

Q: he weights of truffles follow a normal distribution, with a mean weight of 347 grams and a standard…

A: Here it is given that - Mean (μ) = 347 Standard deviation (δ) = 15.3 Let X be the weight of truffles…

Q: A spark plug manufacturer claims that the lives of its plugs are normally distributed with a mean of…

A: Let us denote: X= the lives of its plugs X follows a normal distribution with mean=60,000 and…

Q: A study of the amount of time it takes to rebuild the transmission for a 2005 Chevy Cavalier shows…

A: Given information- Population mean, µ = 8.4 hours Population standard deviation, σ = 1.8 hours We…

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

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: At a certain beer bottling plant, the amount of beer that is put in a bottle is known to be…

A:

Q: What is the probability that the height of an 18-year-old man selected at random is between 69…

A: Given μ=68σ=3

Q: The weights of ice cream cartons are normally distributed with a mean weight of 10 ounces and a…

A: P(X>10.16)=1-Pz<x-μσ=1-Pz<10.16-100.6=1-P(z<0.27)=1-0.6064=0.3936 Therefore the…

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: The lifetime of lightbulbs has a mean of 1500 hours and a standard deviation of 100 hours. A sample…

A:

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.