Americans spend an average of 23.6 hours per week online, with a standard deviation of 7. The distribution of internet watching is not necessarily normally distributed. Suppose you took a random sample of 50 people. What is the probability that the sample average will be between 23 and 24 hrs? Round your answer to three decimal places

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A: (a)   Obtain the probability that pregnancy will last 307 days or longer. The probability that…

Q: The mean height of Grade III pupils is 138 cm with a standard deviation of 8 cm. If a sample of 30…

A: given data μ = 138σ = 8n = 30P(x¯ ≥140) = ?

Q: A random sample of shoppers at a convenience store are selected to see how much they spent on that…

A: Standard deviation ,σ = 6.94confidence- level = 0.99So, level of significance = 1-0.99 = 0.01E =…

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A: Here given situation is of normal distribution, which is continuous distribution. Let X : IQ of…

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Q: Assume that adults have IQ scores that are normally distributed with a mean of u= 105 and a standard…

A: Solution

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Q: Help with calculations, round to 4 decimal places.

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Q: Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the…

A: Solution: It is given that, Population mean, 70 Standard deviation, 5 Given that Cody took his first…

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Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=105 and a standard…

A: Let "X" be the IQ score of the adults.

Q: Scores from the midterm statistics exam followed a normal distribution with a mean of 70 and a…

A: given data normal distributionμ = 70σ = 10earn grade A if score atleast 86.

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Q: The weights of steers in a herd are distributed normally. The standard deviation is 200lbs. and the…

A: Let "X" be the weight of steers in a herd.

Q: At a tennis tournament a statistician keeps track of every serve.  The statistician reported that…

A: GivenMean(μ)=100standard deviation(σ)=9

Q: Adult men have an average height of 69.0 inches with a standard deviation of 2.8 inches. Find the…

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Q: The following table shows the number of people that have either 0, 1, 2 or 3 cars registered in…

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Q: Watch your cholesterol: The mean serum cholesterol level for U.S. adults was 201, with a standard…

A: Mean(µ) = 201 Population Standard deviation(σ) = 40.8 N = 109 So , Sample standard deviation = σ /…

Q: Norman is a student at a college in Durban. The amount of time, in minutes, that Norman walks to the…

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Q: A particular fruit's weights are normally distributed with a mean of 589 grams and a standard…

A: GivenMean(μ)=589standard deviation(σ)=28

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A: Let X be the IQ scores  from normal distribution with mean (μ) = 105, standard deviation (σ) = 11…

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Q: Type in your answer below: As in the previous question, female's puls 74 beats per minute and a…

A: Population mean =74Population standard deviation =12.5

Q: ording to a study done by De Anza students, the height for Asian adult males is normally distributed…

A: GIVEN DATA, normal distribution μ=66σ=2.5X = height of the individual.p(64<X<69)=?

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.