Suppose glucose content are measured from 20 pineapple cans, randomly selected from a local canning plant The glucose content from this sample resulted in a standard deviation of 5.8 milligrams. Calculate a 90% confidence interval for the standard deviation of glucose content in the canned pineapples. Assume the distribution of glucose contents to be normal.

Q: A sample of 25 automobiles has a pollution by-product release standard deviation of 2.3 ounces when…

A:

Q: An article presents the results of a study in which the weights of 295 eggs from 27 week-old…

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Q: Wildlife conservationists studying grizzly bears in the United States found that the mean weight of…

A:

Q: A random sample of 25 bottles of Vitamin C contains, on average, 325.05 mg with a standard deviation…

A: Given,sample size(n)=25sample mean(x¯)=325.05sample standard deviation(s)=0.5degrees of…

Q: A researcher has collected the blood samples of 29 individuals and found that the mean hemoglobin…

A: Obtain the 95% confidence interval for the mean hemoglobin concentration for the population. The 95%…

Q: If a sample of 25 fish from my pound has mean weight 157 grams with a standard deviation of 8.3…

A: Solution: Let X be the weight of fish. From the given information, x-bar=157 grams, S=8.3 grams and…

Q: In a random sample of 60 computers, the mean repair cost was $150 with a standard deviation of $36.…

A: Solution is given below.

Q: From the normally distributed systolic blood pressures of a given patient population with a standard…

A: Sample mean = x̅ = 120 Sample size = n = 9 Population S.D = σ = 24 Standard Error = σ/√n  =…

Q: A random sample of 16 workers was taken from the workers of one of the factories, and it was found…

A: Given- A random sample of 16 workers was taken from the workers of one of the factories, and it was…

Q: The heights of 8 Japanese men were taken with sample mean of 155 cm (centimeters) and standard…

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Q: In a random sample of seven cell​ phones, the mean full retail price was ​$407.00 and the standard…

A: Solution: Let X bet the retail price of cell phone. From the given information, x-bar=$407, s=$196…

Q: A researcher has collected the blood samples of 35 individuals and found that the mean hemoglobin…

A:

Q: A company manufactures LCD monitors, which have a lifespan that is approximately normally…

A: We have given that,  Sample mean or average (x̄) = 180 months, standard deviation (s) = 96 months…

Q: From a random sample of 68 businesses, it is found that the mean time that employees spend on…

A: Given dataSample size(n) = 68Sample mean = 4.9 standard deviation = 0.35Significance level(α) =…

Q: If a sample of 4 fish from my pond has mean weight 157 grams with a standard deviation of 8.3 grams…

A: Solution: Let X be the weight of fish in my pond. From the given information, n=4, x-bar = 157…

Q: The heights (in inches) of adult males in the United States are believed to be Normally distributed…

A: The point estimate is=sample mean=69.72 sample standard deviation=s=4.15 sample size=n=25 confidence…

Q: The admissions officer at a small college compares the scores on the Scholastic Aptitude Test (SAT)…

A: Since, the population variances are unknown the Student's t-test will be applied. The variances are…

Q: A random sample of 40 adults with no children under the age of 18 years results in a mean daily…

A: Given, A random sample of 40 adults with no children under the age of 18 years results in a mean…

Q: A random sample of 800 credit-card holders shows that the mean annual credit-card debt for…

A: Given information:  A random sample of n = 800 credit card holders was taken. The sample mean annual…

Q: If a sample of 25 fish from my pound has mean weight 157 grams with a standard deviation of 8.3…

A: Given information Sample size(n) = 25 Sample mean = 157g Population standard deviation (σ) = 9.4 g…

Q: A reacher has collected the blood samples of 29 individuals and found that the mean hemoglobin…

A: Given:

Q: The number of motorcycles sold annually by salespeople is normally distributed with a standard…

A: From the provided information, Population standard deviation (σ) = 15 Sample size (n) = 300 Sample…

Q: A random sample of 50 children 13 to 15 years old was obtained, and their daily consumption of iron…

A:

Q: A study by the department of education of a certain state was trying to determine the mean SAT…

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Q: A random sample of 1000 google play apps was collected and the average rating was calculated to be…

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Q: A company that produces white bread is concerned about the amount of sodium in its bread. The…

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Q: The mean nicotine content of a simple random sample of 25 unfiltered king-size cigarettes is 1.26…

A:

Q: The head of the quality department of a battery factory needs to estimate the average lifetime of a…

A: Here we have been provided with population standard deviation , σ = 100 hours sample size , n = 64…

Q: A researcher is conducting a study to determine the mean trough dosage of medication for a…

A: It is given that the standard deviation is 40, sample size (n) is 350 and the level of confidence is…

Q: A paint manufacturer wants to determine the average drying time of a new interior wall paint. If for…

A: Given Information: Sample size (n) = 12 Sample mean (x¯) = 66.3 Sample standard deviation (s) = 8.4…

Q: A sample of twenty newborn elephants had a sample mean of 225 pounds and a sample standard deviation…

A: Here, the population standard deviation is given. Hence, it will be best to use a z- interval.

Q: Suppose that the owner of a recently opened convenience store in Kuala Lumpur, Malaysia, wants to…

A: Given: n=16x¯=75s=6

Q: Suppose that shopping times for customers at a local mall are normally distributed with known…

A: Given: n=64, x=75 and σ=20.   The value of z at 95% confidence level is 1.96.

Q: .A sample of seven college wrestlers had an average weight of 267 pounds with a sample standard…

A: It is given that sample mean is 267 and the sample standard deviation is 10.

Q: A researcher is conducting a study to determine the mean trough dosage of medication for a…

A:

Q: According to a health foundation survey from 2018 and 2016, the average annual premiums for…

A: The provided information is, The confidence level is 97%. Therefore, the level of significance is 1…

Q: A sample of 22 public high school students spent an average of 7 hours studying per week. Assuming…

A:

Q: The monthly advertising expenditure of the company is normally distributed with a standard deviation…

A:

Q: The standard deviation, S, for the annual medical cost of 24 households was found to equal $1689…

A: Suppose σ is the annual medical cost for all households.

Q: The monthly advertising expenditure of the company is normally distributed with a standard deviation…

A:

Q: A random sample of 15adultRainbow trout in a fish hatchery showed the average weight was 3.5pounds…

A: In question, given that, a random sample of 15 adult rainbow trout in a fish hatchery having an…

Q: A college alumni Organization sent a survey to all recent graduates to ask their annual income. 20%…

A: Given, All recent graduates of a college were asked their annual income for a survey that was…

Q: A study by the department of education of a certain state was trying to determine the mean SAT…

A:

Q: A food snack manufacturer samples 15 bags of pretzels off the assembly line and weighed their…

A: Here, sample mean is x-bar = 10.2, the sample standard deviation is s = 0.25 and sample size n = 15.…

Q: A recent study of 28 randomly selected employees of a company showed that the mean of distance they…

A:

Q: A study was conducted to estimate hospital costs for car accident victims who wore seat belts.…

A: Using t distribution for calculating confidence interval becauseof unknown population sd.

Q: Wildlife conservationists studying grizzly bears in the United States found that the mean weight of…

A:

Q: The number of motorcycle sold annually by salespeople is normally distributed with a standard…

A:

Q: A study by the department of education of a certain state was trying to determine the mean SAT…

A:

Q: Suppose a random sample of 50 baksetball players showed the average height to be 78 inches. Also…

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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.