1. The average amount of calories from a hamburger served in a restaurant in 220 per order with a standard deviation of 30 calories. What is the probability that the mean calories from 20 orders is between 220 and 240 saleries?

Q: 1. A brisk walk at 4 miles per hour burns an average of 300 calories per hour. If the standard…

A: Followings are the Explanation of the question Let X be the continuous variable follows the Normal…

Q: The average test score in a certain statistics class was 88 with a standard deviation of 11. There…

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Q: In 2014, the per capita consumption of soft drinks in the United States was reported to be 42.1…

A: Hey, since there are multiple subparts posted, we will answer the first three subparts. If you want…

Q: The weight of a carton of a dozen eggs produced by a certain breed of hens is supposed to be…

A: Note: Hi there! Thank you for posting the question. As there are several independent questions,…

Q: In an examination in Statistics, the mean grade is 72 and the standard deviation is 6. Find the…

A: Given that ; Population mean (u) = 72 Standard deviation = 6  By using standard normal distribution…

Q: Find the probability that a sample of 18 has a sample mean below 32. The population mean is 24 and…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: High school girls average 80 text messages daily. Assume the population standard deviation is 15…

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Q: Which expression entered into a graphing calculator will return the probability that a data value in…

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Q: Assume that the weight of people, measured in pounds, has a normal distribution with a mean of 136…

A: Answer: Given that   ‘x’ is Normally distributed with                 Mean  µ =136       standard…

Q: Provide an appropriate response. 11) The probability that a tennis set will go to a tiebreaker is…

A: Suppose a random variable x, defines the number of tiebreakers in tennis set.It is given the…

Q: ind the probability that a voice recorder will last between 2.8 and 6 years. Find the 70th…

A: Let X denote the voice recorder and it follows normal distribution with mean of μ=4.1 years and…

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

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Q: A grading scale is set up for 1000 students test scores. It is assumed that the scores are normally…

A: Calculation:Let X denote score of a randomly selected student. It is given that X has a normal…

Q: art professor gives an A to any student in the top 9% of the distribution. The grades are normally…

A: Given X~N(mean μ=60, standard deviations σ=5) P(X>b)=9%

Q: The average number of dropouts for a school district has been 300 per year with a standard deviation…

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Q: 2. Fill in the blanks: A standardized variable always has a mean of O and a standard deviation of…

A: 2. A standardized variable is always has mean 0 and standard deviation of 1.

Q: Assume the average weight of a schoolchild's book bag is 17.5 pounds, with a standard variation of…

A: Let X be a random variable that denotes the weight of the child's school bag. Then, it is provided…

Q: Solve. In a box of 13 batteries, 8 are dead. You choose two batteries at random from the box. Let…

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Q: 1. Draw a histogram from all the data. Starting at the bottom row, for each set of 10 flips, place…

A: A histogram gives us the frequency distribution. It visualizes the data over a certain time period…

Q: According to government data the probability that an adult was never in a museum is 11%, in a random…

A: Givenp=0.11sample size(n)=20Let "x" be the no.that were never in a…

Q: If the probability of a defective bolt is 0.1, find he mean he standard deviation for the…

A: a) If the probability of a defective bolt is 0.1. Given that there are total of 400. That is, n=400…

Q: The amount of soda in a randomly selected bottle varies according to a normal distribution with mean…

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Q: d the mean and standard deviation of the number of red-headed Scots in a randomly selected group of…

A: Let X be the random variable from binomial distribution with probability of  red hair for Scottish…

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

A: The population mean for the exam is 70 and standard deviation is 5 μ=70σ=5 Cody's exam score is 80

Q: All California 5th graders take a standardized test. The mean for the population of 5th graders is…

A: If a random variable X has a distribution with mean µ and standard deviation σ, then the Z-score is…

Q: a study of 880 homeowners in a certain area showed that the average value of the homes was $82,000,…

A: Answer: From the given data, Mean (μ) = 82000 Standard deviation(σ) = 5000 Sample size(n) = 50 X…

Q: Assume that the number of days from conception to birth is normally distributed with a mean of 258…

A: Given  that  the number of days from conception to birth is normally distributed with a mean of 258…

Q: 6. Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

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Q: 1. The average number of milligrams (mg) of cholesterol in a cup of a certain brand of ice cream is…

A: Given,mean(μ)=680standard deviation(σ)=40

Q: a. What are the mean and the standard deviation of an average person’s number of monthly visits to…

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Q: 3. If the probability of a defective bolt is 0.1, find (a) the mean, (b) the standard deviation, for…

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Q: The probability that a person catches a cold during the cold and flu season Is 0.4. Assume that 10…

A: Given data, p=0.4 n=10 sd=?