The average birth weight for babies at a certain hospital is 6.98 pounds with a standard deviation of 0.52 pounds. Assume that the distribution of birth weights is normal. (a) What is the probability that a baby born at this hospital has a weight between 6.25 and 7.5 pounds? (b) What percentage of babies born weigh at least 8.25 pounds? (c) Unusually small babies are given special attention. If the hospital defines “unusually small” as having a birth weight below the fifth percentile, then what is the maximum birth weight that merits special attention?

Q: The average GPA at the University of North Carolina is 3.2, with a standard deviation of 0.3. Assume…

A: Given that.   X~N( μ , ?^2 )   μ=3.2     , ?=0.3   Z-score =( x - μ )/?

Q: in a certain region, the mean annual salary for electricians is $58,650. Let x be a random variable…

A: GivenMean(μ)=58650standard deviation(s)=1890sample size(n)=40

Q: The cost of unleaded gasoline in the Bay Area once followed (approximately) a normal distribution…

A:

Q: Suppose a brewery has a filling machine that fills 12 ounce bottles of beer. It is known that the…

A: Let X be the random variable that the amount of beer poured by this filling machine.Given that,

Q: and a standard deviation of 1.3 degrees Celsius.

A: Let X denotes the average noontime temperature (in degree Celsius) in a certain location. Given that…

Q: The mean of a normal probability distribution is 600; the standard deviation is 20. Practically all…

A:

Q: The mean monthly household electric bill in a certain community is $110. Assume the amounts are…

A: Suppose the random variable x defines the monthly household electric bill in a certain community.

Q: The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation…

A: Given that, the lengths of pregnancies are normally distributed with a mean of 266 days and a…

Q: In​ 2008, the per capita consumption of soft drinks in Country A was reported to be 19.11 gallons.…

A: GivenMean(μ)=19.11standard deviation(σ)=5

Q: It is estimated that the weight of a box of cereal follows a normal distribution with a mean of 23.8…

A: From the given information,   Mean = 23.8 Standard deviation = 2.2   The objective is to find the…

Q: The population mean annual salary for an electrician is $46,700.A random sample of 42 electricians…

A:

Q: When the weight of a parcel of oranges was measured, it was observed that the average 200 grams and…

A:

Q: Assume that the total cholesterol levels for adults are normally distributed with mean cholesterol…

A: Given data: Mean =51.8 Standard deviation = 14.3

Q: According to the Advertising Age, the average base salary for men at middle management positions are…

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

Q: It is known that the distribution of the soda consumption by teenagers follows a normal distribution…

A: Answer: - Given,  X ~ N(μ,σ)                 Where, μ  = 12,   and σ = 4                 What is the…

Q: The mean of a normal probability distribution is 600; the standard deviation is 20. About 68% of…

A: given data normal distribution population mean  = 600 population sd = 20

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: We are given,μ = 196σ = 22n = 60

Q: Body temperatures of healthy adults have a bell shaped distribution with a mean of 98.20℉ and a…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: 2. The average gas mileage of an Audi A5 Cabriolet car is 39.5 miles per gallon. If the gas mileages…

A: given information According to given question random variable (x = average gas mileage) follows…

Q: The line width for semiconductor manufacturing is assumed to be normally distributed with a mean of…

A: Answer - ● C. NONE Explanation is given in the next step.

Q: These babies will have a mass of less than how many pounds?

A: Given that masses of newborns are normally distributed with a mean of 6.6 lbs. and a standard…

Q: (a) What is the probability that a household's weekly expenditure is less than $2,225? (b) What is…

A: As per our guidelines, we are allowed to answer three sub-parts only. Thanks The following…

Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A: Given ,       Mean,μ =267standard deviation,σ=45using formula,Z-score = x-μσ

Q: Data from the Bureau of Labor Statistics’ Consumer Expenditure Survey show that annual expenditures…

A: Given information- For the year 2001- Population mean, µ = $235 Population standard deviation, σ =…

Q: The lengths of pregnancies are normally distributed with a mean of 269 days and a standard deviation…

A: The problem presented involves a normal distribution of pregnancy lengths with a mean of 269 days…

Q: The price of gas is normally distributed with mean $3.48 and standard deviation $0.90. What is the…

A:

Q: The distribution of cholesterol levels in teenage boys is approximately normal with mean of 170 and…

A:

Q: 4. The systolic blood pressure reading for a person varies throughout the day. Assume that for a…

A: The normal distribution is used in statistics to calculate probabilities.

Q: The lengths of pregnancies are normally distributed with a mean of 270 days and a standard deviation…

A: a) Normal distribution , μ = 270  , σ = 15 (given)    Let x be the number of days of pregnancy for…

Q: A report announced that the median sales price of new houses sold one year was $231,000​,and the…

A:

Q: The lengths of pregnancies are normally distributed with a mean of 270 days and a standard deviation…

A: Pregnancy Length AnalysisGiven:Pregnancy lengths are normally distributed with a mean (μ) of 270…

Q: A government sample survey plans to measure the total cholesterol level of an SRS of men aged 20-34.…

A: Note: As it is not logical that “the probability that x falls within + or -2 milligrams per…

Q: The lengths of pregnancies are normally distributed with a mean of 269 days and a standard deviation…

A:

Q: Given a distribution with a mean of 80 and a standard deviation of 10, what is the probability of a…

A: Given that  Mean=80 , Standard deviation=10 Find  P(X<=65)

Q: The high temperature X (in degrees Fahrenheit) on January days in Columbus, Ohio, varies according…

A: Given data,μ=21σ=10P(15<X<25)=?

Q: In a certain region, the mean annual salary for electricians is $58,650. Let x be a random variable…

A: According to the given information, we have Sample mean = 58650 Sample size = 50 Standard deviation…

Q: Suppose that heights of 10-year-old boys in the US vary according to a normal distribution with mean…

A: The objective of this question is to find the probability that the height of a randomly selected…

Q: Assume that the traffic to the web site of Smiley’s People, Inc., which sells customized T-shirts,…

A: Given information- Population mean, µ = 4.6 million Population standard deviation, σ = 880000 =…

Q: Customers at a popular Assume that the amount spent follows approximately a normal distribution with…

A: Suppose it is known that the distribution of amount spent in the restaurant follows approximately a…

Q: The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation…

A: