Question 35 SAT scores are distributed with a mean of 1,500 and a standard deviation of 300. You are interested in estimating the average SAT score of first year students at your college. If you would like to limit the margin of error of your 95% confidence interval to 25 points, how many students should you sample? Submit Question elf 52 F Cloudy

Q: In a sample of 100 patients that did not receive the flu shot, the average recovery time after being…

A: The random variable recovery time follows normal distribution. The sample size is 100. The sample…

Q: QUESTION # 1. The measured voltage amounts from a sample of 27 households have a mean of 123.59…

A: It is given that the mean of measured voltage is 123.59, standard deviation is 1.38 and the sample…

Q: Question 2: Studies indicate that small businesses (20-40 employees) in the U.S. spend an average of…

A: Note: According to Bartleby expert guidelines, we can answer only first question with their three…

Q: Question 3: A random sample of 55 observations produced a mean value of 28 and a standard deviation…

A: Given  mean=x̄=28, n=55, s=1.3

Q: Use the normal distribution to find a confidence interval for a proportion p given the relevant…

A:

Q: QUESTION 3 A Computer manufacturer wants to estimate the mean number of defective microchips it…

A: Given,margin of error(E)=0.53standard deviation(σ)=9.61α=1-0.95=0.05α2=0.025Z0.025=1.96     (from…

Q: QUESTION 5 Xona, a photocopy company plans to estimate the mean of visitors to its shop. There was a…

A: Given;standard deviation(s)=66margin of error(E)=7at confidence level 95%, significance level…

Q: question(3): based on an article published  in the city of toronto the response time is  6  ,7  ,9…

A: The sample mean is as follows: The sample standard deviation is as follows:

Q: QUESTION 15 In a bakery, a sample of 19 days was taken to study the daily sales. It was found that…

A:

Q: A researcher is interested in finding a 98% confidence interval for the mean number of times per day…

A: Given information: A researcher is interested in finding a 98% confidence interval for the mean…

Q: Question 4 You have taken 10 observations from normally distributed data that is known to have a…

A: Given data: Population standard deviation = 1 Sample size = 10 Sample mean = 32 To calculate  the…

Q: QUESTION 2 A Computer manufacturer wants to estimate the mean number of defective microchips it…

A: The population standard deviation is 9.71, margin of error is 0.56, and confidence level is 95%.

Q: In a survey, 10 people were asked how much they spent on their child's last birthday gift. The…

A: Solution-: Given: n=10, x ¯=46, s=14, c=0.98 We find, Point estimate =? Margin of error=?

Q: Question 7: 120 people have rated a new wine on a taste scale of 0 to 100. The result of the survey…

A: It is given that that sample mean is 75.5167 and sample standard deviation is 8.0742.

Q: Question 11: You are interested in estimating the the mean age of the citizens living in your…

A: We have  Required Margin of error (E) = 4 Population standard deviation = 19 Significance level =…

Q: QUESTION 7 You interview a sample of 100 employees who have left the company. You want to estimate,…

A:

Q: QUESTION 5 Xona, a photocopy company plans to estimate the mean of visitors to its shop. There was a…

A: Given : Standard deviation (σ) = 60 Confidence level = 95% Margin of error (E) = 8

Q: Question 1) When 16 seventeen-year-old women were randomly selected and tested with an aerobics…

A: Given data: Sample size, n = 16 Sample mean scores is, Sample standard deviation, s = 7.3 For 90%…

Q: QUESTION 14 AI Ain municipality is deciding whether or not to spend more money to reduce the amount…

A: Here AS PER POLICY I HAVE CALCULATED 3 SUBPART PLZ REPOST FOR REMAINING

Q: Use the t-distribution to find a confidence interval for a mean μ given the relevant sample results.…

A: Given, Sample size = 42 Sample mean = 82.6 Sample standard deviation = 7.9   Since the population…

Q: QUESTION 6 If the sample standard deviation is equal to 25.20 and the sample size is 60, what is the…

A: Given Information: Sample standard deviation s=25.20 Sample size n=60 Confidence level is 95%…

Q: Question 37 SAT scores are distributed with a mean of 1,500 and a standard deviation of 300. You…

A:

Q: QUESTION 1 Xona, a photocopy company plans to estimate the mean of visitors to its shop. There was a…

A: Given Standard deviation=σ=23 Confidence level=95% i.e. 100(1-alpha)%=95% Therefore, α=0.05 Allow…

Q: QUESTION 2 33 packages are randomly selected from packages received by a parcel service. The sample…

A: Confidence Interval: In statistics, we can say a range of values of the specified population…

Q: Question 2: You measure 40 backpacks' weights, and find they have a mean weight of 64 ounces. Assume…

A:

Q: Question 6 > You are interested in estimating the the mean lifespan of a cell phone. From past data,…

A: Method are defined in the solution

Q: "Lula-Rae Inc. claims that ingesting a concoction of lemon and lavender essential oils will…

A: Given information Sample mean M = 42 Population mean µ = 43 Sample size n = 144 Standard deviation σ…

Q: QUESTION 9 In a bakery, a sample of 19 days was taked to study the daily sales. It was found that…

A: Givensample size(n)=19Mean(x)=124standard deviation(s)=86confidence interval = 98%

Q: Question 1. In a study of vehicle speeds on a certain section of highway, a simple random sample of…

A: Solution: Given information: n= 25 Sample size  x= 60.0 mph  Sample mean s= 4.0 mph Sample standard…

Q: QUESTION 34 "Lula-Rae Inc. claims that ingesting a concoction of lemon and lavender essential oils…

A: Given that, "Lula-Rae Inc. claims that ingesting a concoction of lemon and lavender essential oils…

Q: 245 HT: St.. Quiz: Test #4 The scores on the Wechsler Intelligence Scale for Children (WISC) are…

A:

Q: Question 5. In a recent BMO survey, many Canadian university students said they expected $26, 500…

A: The random variable X follows normal distribution. We have to construct 98% confidence interval for…

Q: QUESTION 41 You are planning a survey of starting salaries for recent business major graduates from…

A:

Q: Question 2 It is known that the population wellbeing level of female follows a normal distribution.…

A: State the hypotheses. That is, there is no evidence to conclude that the average well being score…

Q: QUESTION 6 Suppose the country club bills based on a sample of 4 members are: 387, 1,018, 679, 926.…

A: Sample standard deviation is given by,

Q: Certain protein powder is sold in packets with an advertised mean weight of 1.5 kgs. The standard…

A: Obtain the 99% confidence interval for the mean weight of this protein powder.   The 99% confidence…

Q: In a survey, 19 people were asked how much they spent on their child's last birthday gift. The…

A: In a survey, 19 people were asked how much they spent on their child's last birthday gift. The…

Q: QUESTION 1 In a phone manufacturing company, the management would like to know the mean defective…

A:

Q: QUESTION 18 A researcher wants to estimate mean commuting distance within plus or minus two miles…

A:

Q: QUESTION 3 Xora, a photocopy company plans to estimate the mean of visitors to its shop. There was a…

A: Given : Margin of error, ME = 5.0 population standard deviation, σ = 87.0…

Q: A survey of 88 men found that an average amount spent on St. Patrick's day of $60 with a standard…

A: The sample sizes are 88 and 86.

Q: Question 5 A consumer agency that proposes that lawyers' rates are too high wanted to estimate the…

A: Given Data : Sample Size, n = 70 Sample Mean, x̄ = 420 standard…

Q: Question 6 Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her…

A:

Q: After post-graduate study, Mike found a job as HR analyst in London. The company is currently…

A:

Q: QUESTION 1 Annual per capita consumption of milk is 21.5 galons with a standard deviation of 4.8…

A: From the provided information, Sample size (n) = 30 Sample mean (x̄) =24.1 Standard deviation (σ) =…

Q: Question 1: You measure 29 randomly selected textbooks' weights, and find they have a mean weight of…

A: Given,sample size(n)=29sample mean(x¯)=31population standard…

Q: QUESTION 20 The manager of a paint store, wants to estimate the mean amount of a product sold per…

A: We want to find the lower confidence limit of 92% confidence interval

Q: QUESTION 9 If the population standard deviation is equal to 7.68 and the sample size is 117, what is…

A: Given : Population SD (σ) = 7.68 Sample Size (n) = 117 Confidence Level = 97% So ; significance…

Q: Question 14 Provide an appropriate response. In a random sample of 26 laptop computers, the mean…

A: Given information: n = 26 μ=$150, σ=$35

Q: Question 15: In a survey, 12 people were asked how much they spent on their child's last birthday…

A: Given,sample size(n)=12sample mean(x¯)=44standard deviation(s)=5degrees of…