Suppose that 12 bags of skittles contained on average 27.85 pieces of candy with a standard deviation of 2.7 pieces of candy. For the purposes of this exercise, assume that these bags of skittles is representative of all the bags of skittles and distribution number of candies per bag is aproxiamtely normal. Does the sample data provide convincing evidence that the average number of skittles in each bag is less than 30. Test appropriate hypotheses using a .01 significance level, round your statistic to the appropriate number of decimal places to use the correct chart and round everything else to 4 decimal places. Follow the seven step process used in Algorithm 10.9

Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.21 and a…

A: X~N( μ , ?)   μ=8.21 , ?=1.48   Z-score =( x - μ )/?

Q: o researchers, the mean length of imprisonment for motor-vehicle-theft offenders in a nation is 15.1…

A:

Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.47 and a…

A: Empirical rule: The probability that the observation under the normal curve lies within 1 standard…

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A: Given that  Mean = 8.04 , Standard deviation = 1.53

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A: The normal distribution: A continuous random variable X is said to follow normal distribution with…

Q: A random sample of 20 patrons from a Wolfville restaurant were chosen. Their tips measured in…

A: From the provided information,

Q: find an 80th percentile of the distribution of the average of 49 flyballs

A: Let M denote the average distance of fly balls for the sample of size n = 49.

Q: Assume the hold time of callers to a cable company is normally distributed with a mean of 5.2…

A: Mean, μ= 5.2 minutesStandard deviation, σ = 0.8 minute We have to find the percent of callers who…

Q: The number of orders received daily by an online vendor of used CDs is normally distributed with…

A: The provided information is  µ=210 σ=20 P(X≥246)…

Q: Blood glucose levels for overweight tweens, adolescents between the age 9-12, have a mean of 100…

A: A hypothesis test can be conducted to test whether the population mean is equal to the claimed value…

Q: The incubation time for Rhode Island Red chicks has a Normal distribution with a mean of 21 days and…

A: Here, mean is 21 and standard deviation is 1

Q: A survey found that​ women's heights are normally distributed with mean 63.8 in. and standard…

A: From the given dataFor women's :Fro Men's :

Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.478.47…

A: The random variable shoe size follows normal distribution. The population mean is 8.47. The…

Q: A marketing firm wants to estimate the difference in the mean amount of caffeine in two brands of…

A:

Q: Help!!

A: (a) Given: μ=374, σ=64, n=5 The corresponding z-value needed to be computed is: The probability…

Q: An endocrinologist is interested in the effects of depression on the thyroid. It is believed that…

A: Given:

Q: Almost all medical schools in the United States require applicants to take the Medical College…

A:

Q: Do people who exercise regularly have a cholesterol level less than the recommended level of 140? A…

A: The summary of statistics is,

Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.338.33…

A: Given: Mean,  μ = 8.33 Standard deviation, σ = 1.48 Concept: The empirical rule states that:…

Q: For a 4-units class like Statistics, students should spend average of 12 hours per week studying for…

A: Mean (x̅) = 13 hoursStandard deviation (s) = 3 hoursThe empirical rule, also known as the 68-95-99.7…

Q: ppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.42 and a…

A: Given data,Mean μ=8.42sd    σ=1.52P(6.9<X<9.94)=?

Q: The mean age of 95 teachers in a school is 36 years with a standard deviation of 4.6. Mr.Data is 28…

A: The z-score is -1.74.The percentage of ages that is younger than Ms. Management is…

Q: A coin operated drink machine was designed to discharge a mean of 8 ounces of coffee per cup. In a…

A: The random variable discharge follows normal distribution. We have to test whether the true mean…

Q: Using the empirical rule, what percentage of American women have shoe sizes that are no more than…

A: It is given that Mean, μ = 8.33Standard deviation, σ = 1.5

Q: Are severe psychiatric disorders related to biological factors that can be physically observed? One…

A: Solution: Given information: n1=10 Sample size of patients with obsessivecompulsive disordersn2=10…

Q: Determine the percent of callers who are on hold for more than 4.8 minutes.

A: Assume the hold time of callers to a cable company is normally distributed with a mean of 4.8…

Q: Among health care workers at a local hospital, the average number of vacation days taken per year is…

A: Solution-: Given: μ=5,σ=2.5,n=50 We find the standard error for the sampling distribution =?

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A: Given,   Sample size = 19 Sample mean = 7.9 Sample standard deviation = 0.17

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A:

Q: The average American consumes 82 liters of alcohol per year. Does the average college student…

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Q: Response time is an important statistic for measuring the effectiveness of a fire department, and is…

A: Given data,Mean μ=4.5sd σ=1.2P(4<X<6)=?

Q: The average cost of ttution,room and board at small private liberal arts colleges is reported to be…

A:

Q: A trucking company determined that the distance traveled per truck per year is normally​…

A: Solution-: Let, X= The distance traveled per truck per year Given: We find, P[ either less than…

Q: A survey found that​ women's heights are normally distributed with mean 62.2in. and standard…

A: Men mean =67.7 s = 3.5

Q: What are the cutoff numbers for the number of chocolate chips in acceptable cookies?

A: Let X be the random variable for the number of chocolate chips in a popular brand. X ~ N(μ=23,σ=1.3)…

Q: Testing Hypotheses. In Exercises 13–24, assume that a simple random sample has been selected and…

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Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A:

Q: In 2019, College Board reported that the mean score for the math section of the SAT was 528 with a…

A: given datanormal distributionμ = 528n = 110top 2.5% of student get scholarship

Q: A major car manufacturer wants to test a new engine to determine whether it meets air pollution…

A: Given that  Sample size n =10 Sample mean =61.1 Standard deviation =3.0

Q: What is the probability that the mean number of minutes of daily activity of the 66 mildly obese…

A: Given: Mean no. of minutes of daily activity of mildly obese people, μ1=365sd of of daily activity…