A report from the Illinois Department of Wildlife indicates that when a car and deer collide, there are 40 deer fatalities per 100 collisions between a car and a deer, what is the expected number of fatalities and that standard deviation?

Q: A random sample of 100 observations from a quantitative population produced a sample mean of 28 and…

A: sample mean (x̄)  = 28  sample standard deviation (s) = 6.5 population mean (μ) = 26.8 Answer :…

Q: A sample of 16 scores has a standard error of 12. What is the standard deviation of the population…

A: The standard error of the mean is,

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

A:

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: On average, the printer uses 500 sheets of paper each day with a standard deviation of 10 sheets.…

A: Given mean= 500 and standard deviation= 10 Let, X= number of sheets used by the printer  X follows…

Q: If the mean and the sd. dev. of serum iron values for healthy men are 120 and 15 microgram per 100…

A:

Q: A car insurance company tells its prospective customers that they can save an average of at least…

A:

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

A:

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

A: Answer: X ~ Normal distribution X~ N (μ, σ) The given values are Mean = μ = 40 Standard deviation= σ…

Q: 4. Dunlop Company conducts tests on tires life. For a particular tires, the standard deviation is…

A: Given, Standard deviation is 6000 68% confidence interval is (102,000, 78,000). For a normal…

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

A:

Q: A sample of size 5 will be drawn from a normal population with mean 61 and standard deviation 13.

A:

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

A:

Q: The heights of ten-year-old males are normally distributed with a mean of 56 inches and a standard…

A:

Q: A tire company finds the lifespan for one brand of its tires is normally distributed with a mean of…

A: Solution: Let X be the lifespan for one brand of its tires is normally distributed with a mean of…

Q: Based on a recent study, the household utility bills for three-room flats in Singapore can be…

A: P(X>155)=1-Pz<155-12538=1-Pz<0.79=1-0.7852=0.2148

Q: Given a standard error of 5.2 with a sample size of 9. Then the standard deviation is

A: Solution: 4. From the given information, a standard error is 5.2 and n=9.

Q: A researcher claims that the standard deviation of the number of deaths annually from typhoons in…

A:

Q: Based on Aircraft Safety Council of Country PQR, an average of 18 aircraft accidents occurred each…

A: Given,an average aircraft accidents occurred each year is 18so an average aircraft accidents…

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: 4. A researcher claims that the standard deviation of the numberof deaths annually from typhoons in…

A:

Q: What is the standard deviation of the number of burglarized houses? What is the probability that…

A: Given : The probability that a house in an unban area will be burglarized is 5% . A sample of 50…

Q: If a male person selected from the population has weight 95 kgs, what is his expected height and…

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Q: A large corporation pays its employees an average of $64,000 per year with a standard deviation of…

A:

Q: A small retail store has customers whose ages are normally distributed, with a mean of 37.5 and a…

A: Let X denote the customer ages and it follows normally distribution with a mean of 37.5 and a…

Q: In a recent survey of high school students, it was found that the average amount of money spent on…

A:

Q: In a health examination survey of a prefecture in Japan, the population was found to have an average…

A: Let X denote the blood sugar level readings. Given that X follows N(mean = 99, SD = 12), then  Z =…

Q: According to the U.S. Department of Agriculture, Alabama egg farmers produce millions of eggs every…

A:

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

A:

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

A: Given: μ=58 & σ = 9  Percentage of calls between 25 and 79 can be obtained by the probability…

Q: If a golfer hit drives a golf ball with a mean of 180 yards and a standard deviation of 20 yards,…

A: We have given that  A golfer hit drives a golf ball with a mean of 180 yards and a standard…

Q: 4 An LED lightbulb manufacturer produces lights with a mean lifespan of 10,000 hours and a standard…

A: Given information- Population mean µ = 10,000 hours Population standard deviation, σ = 1,000 hours…

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 recently conducted study, families reported using an average of 70 gallons of gasoline per…

A:

Q: A company claims that the time their customers spend waiting in line for service is normally…

A: Given that  The company claims that the time their customers spend waiting in line for service…

Q: A grocery store's sales experience indicates that its daily apple sales follow a normal distri-…

A: (b) Obtain the cut off point for the top 10% of all daily apple sales. The cut off point for the top…

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

A:

Q: what is the mean and stanadard deviation of a uniform (6,15) random variable?

A:

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

A: Given Information: Mean μ=48 Standard deviation σ=7 Using empirical rule, to find the approximate…

Q: In a binomial experiment, If the number of trials is increased, what happens to the expected value?…

A: We have given that a binomial experiment. Mean = np Standard deviation = sqrt(npq)

Q: The adult eastern hellbender (a type of giant salamander) has a length which is normally distributed…

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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: 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: 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 researcher reports that the average income of system analysts in Makati is P44,000 per month. A…

A: Given: Average(μ)=44000sample size(n)=30Sample mean(x¯)=45800Standard deviaion(s)=5400

Q: ) Find the expected number of defectives and the standard deviation.

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Q: Consider two data sets from sampled populations, one with a high standard deviation and one with a…

A: HERE GIVEN TWO DIFFERENT DATA SET One has High standard deviation while second has low standard…

Q: Furnace repair bills are normally distributed with a mean of 269 dollars and a standard deviation of…

A: Given: Population meanμ=269Sample size(n) =64Population standard deviationσ=20 Consider X be the…