7. Assume that the height of people, measured in inches, has a normal distribution with a mean of 65 inches and standard deviation of 4 inches. a. Find the probability that a randomly selected person has a height greater than 68 inches. Find the probability that a sample of 9 randomly selected people has a mean height greater than 68 inches? b.

Q: 5. Thirty-two percent of adult Internet users have purchased products or services online. For a…

A:

Q: Given a normal distribution whose mean is 590 and whose standard deviation is 74, find the…

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Q: 8. The reading speed of sixth-grade students is approximately normal, with a mean speed of 135 words…

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Q: Assume that 29% of all children in urban schools fail to graduate from high school. An SRS of 400…

A: 1. b) The mean of the sampling distribution of p^ is, μp^=p=0.29 Thus, the mean of the sampling…

Q: 11) Find the score that separates the top 80% from the bottom 20% if the Mean is 100 and the…

A: Given: Using Z table or excel command =NORMSINV(0.20) we get,

Q: d) What is the probability that the number of drivers will be 10 or more? e) Find the mean and the…

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Q: 14. The golf scores for a school team were normally distributed with a mean of 68 and a standard…

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Q: he number of chocolate chips in an​ 18-ounce bag of chocolate chip cookies is approximately normally…

A: Note: Please repost part d as i can answer only 3 subparts as per my policy. Given data,μ=1252σ=129

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Q: The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally…

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Q: In a distribution exactly normal, 7% of the items are under 35 and 89% are under 63. What are the…

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Q: a. How many standard deviations away from the mean is a beetle with mandible length of .44 mm? b.…

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A: According to the given information, it is required to determine the mean and standard deviation.

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A: Given that  Random sample size (n) =45 Mean price (x¯)= $139 Population standard deviation…

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A: Part a: For 18-29 years old the percent of individuals involved in stock market is 31%. Thus, X…

Q: In a normal distribution, 11% of the items are under 35 and 76% are under 83. Find the mean and…

A:

Q: (d) What is the probability that the number of drivers will be within 2 standard deviations of the…

A: Let X=the number of drivers X follows a Poisson distribution with mean= 20 So the standard…

Q: The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally…

A: Hello there! there are more than three subparts in the question. According to our policies we cannot…

Q: The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: 2. A normally distributed set of 968 values has a standard deviation of 11 and a mean of 108. Which…

A:

Q: According to government data, the probability that a woman between the ages of 25 and 29 was never…

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Q: 9. Brooke Henderson of the LPGA, who just won her second major last weekend, played a round of golf…

A: GivenMean(μ)=21.4standard deviation(σ)=16.6

Q: Consider a test of coordination that has a normal distribution, a mean of 60 and a standard…

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Q: 20. The length of adult parakeets is normaly distributed. If the mean length is inches with a…

A: Given that, Mean = 8 Standard deviation = 0.25

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Q: The lifespan of a laptop battery is normally distributed. If the mean lifespan of a battery is 4…

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A: The mean is 28 and the standard deviation is 4.

Q: The mean gas mileage for a hybrid car is 56 miles per gallon. Suppose that the gasoline mileage is…

A: It is given that the gas mileage for a hybrid car is normally distributed mean 56 and standard…

Q: Runzheimer International publishes data on overseas business travel costs. It reports that the…

A: The standard deviation will be obtained as given below:

Q: The Institute for College Access and Success reported that 67% of college students in 2008 graduated…

A: The sample given is,n=85. It is also given that 67% of college students graduated with student loan…

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A: Given, Driving time normally distributed with mean 35 and standard deviation 8 minutes.

Q: The mean gas mileage for a hybrid car is 57 miles per gallon. Suppose that the gasoline mileage is…

A: We know that If X follows normal distribution with mean μ and standard deviation σ, then  Z=X-μσ…

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A: From the given information we conduct t test for one mean.

Q: an gas mileage for a hybrid car is 56 miles per gallon. Suppose that the gasoline mileage is…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: (25) The distribution of average speeds of the top 53 drivers in NASCAR is roughly symmetric,…

A: (a) Draw the normal curve with the values from Z=–3 to Z=3

Q: 2. If a chart shows that more than 80 percent of the students received either an A or B in the…

A: The given is inferred to indicate the proportion of students, who recieved either A or B in the…

Q: A study found that the heights of college males follow a normal distribution with a mean of 70…

A: Given information- Mean height, μ = 70 inches Standard deviation, σ = 2.5 inches We have to find the…

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Q: A quality control company was hired to stuudy length company. The team carefully measured the length…

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Q: According to a survey of the top 10 employers in a major city in the Midwest, a worker spends an…

A: From the given information, μ=413 and σ=26.8 The variable time spent is approximately normally…

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Q: The annual per capita consumption of bottled water was 33.6 gallons. Assume that the per capita…

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Q: Find the standard deviation for the group of data items (to the nearest hundredth)8,9,10,11,12

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Q: A technical assistance service with electronic equipment has that its service time is normally…

A: Given,mean(μ)=80standard deviation(σ)=25

Q: The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally…

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

Q: Suppose you have a distribution with a mean equal to 100, median equal to 75, and mode equal to 50.…

A: Given that  Mean =100 Median =75 And Mode=50

Q: c. What is the probability that exactly ten of the 45 luxury cars sold are silver? d. What is the…

A: It is given that n=45 and p=0.191.

Q: The mean gas mileage for a hybrid car is 57 miles per gallon. Suppose that the gasoline mileage is…

A: Let X is the gas mileage for a hybrid car. X~Normalμ=57,σ2=3.52

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.