a teacher looks at a random sample of 42 final exam completion times and finds a mean time of 111 minutes with a sample standard deviation of 44 minutes. Which value best approximates the margin of error for a

Q: mpound and has built 16 tires and tested them to end-of-life in a road test. The sample san and…

A: Given n=16 Xbar=60139.7 S=3645.94 C=95%

Q: The mean age when smokers first start is 13 years old with a population standard deviation of 1.9…

A: Givenn=31x=12.2σ=1.9α=0.10

Q: A random sample of 21 Camden County College students had a mean age of 24 years, with a standard…

A:

Q: The mean age when smokers first start is 13 years old with a population standard deviation of 1.8…

A: Given ,  Population mean = μ = 13 years Population standard deviation = σ = 1.8 years Sample size =…

Q: what is the minimum accepted score

A:

Q: There is a study to be done on the mean duration of phd students at small universities. What is the…

A: The standard deviation is 42 months, the margin of error is 12 months and confidence level is 99%.

Q: Researchers are interested in the effect of pet companionship on depression in elderly adults. They…

A: According to the given information in this questionWe need to identify the correct option

Q: The mean age when smokers first start is 13 years old with a population standard deviation of 2…

A: Given that  Sample size n =31 Sample mean =12.1 Population standard deviation =2

Q: The mean age when smokers first start is 13 years old with a population standard deviation of 2…

A: From the provided information, Sample size (n) = 31 Sample mean (x̄) = 12.4 Population standard…

Q: teacher administers a midterm examination in which the grades are normally distributed with mean 42…

A:

Q: The mean age when smokers first start is 13 years old with a population standard deviation of 2…

A: Given Sample=30 Mean=12.2 Standard deviation=2 Significance level=0.01

Q: The mean age when smokers first start is 13 years old with a population standard deviation of 2…

A: The hypotheses for the test is given below.Null hypothesis:H0: µ = 13Alternative hypothesis:H1: µ ≠…

Q: The mean age when smokers first start is 13 years old with a population standard deviation of 1.8…

A: Hypothesis: Null hypothesis: H0: μ=13Alternative hypothesis: H1: μ≠13 The test statistic is obtained…

Q: If the mean= 85 and standard deviation =8 and n=64(sample size) construct a 95% confidence interval…

A:

Q: Suppose that a garage samples 20 customers. They find the average time for there oil change is 4,206…

A: The objective of this question is to find the lower bound of the 90% confidence interval for the…

Q: Suppose that a garage samples 20 customers. They find the average time for there oil change is 4,029…

A: The objective of this question is to find the upper bound of the 90% confidence interval for the…

Q: r. James Lynch conducts a study to find that the average time eople wait in line before they can…

A:

Q: A sample of 27 account balances of credit company showed a mean of customer balance of 6,000, but…

A: Given data : sample size, n = 27 sample mean, x̄ = 6000.0 sample standard…

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: Suppose we want to estimate the difference between the room rates of luxury hotels in New York…

A: Given,

Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…

A:

Q: 4. Overproduction of uric acid in the body can be an indication of cell breakdown. Over a period of…

A: Given information Sample size n = 8 Sample mean x̅ = 5.35 mg/dl Population standard deviation σ =…

Q: that the claim that the The mean age when smokers first start is 13 years old with a population…

A: Step 1:Given data : Sample size n=34Sample mean  xˉ=12.1population sd σ=1.8Significance level α=0.01…

Q: Suppose the mean height in inches of all 9th grade students at one high school is estimated. The…

A:

Q: The mean length of a work week for the population of workers was reported to be 45 hours. Suppose…

A: Note:Hey, since there multiple questions  posted, we will answer first question for you. If you want…

Q: A study wants to test the mean time that people take to finish a crossword puzzle. The null…

A: Givensample size(n)=30Mean(x)=24standard deviation(s)=5significance level(α)=0.05

Q: The mean age when smokers first start is 13 years old with a population standard deviation of 2…

A: Step 1:Given data : Sample size n=35Sample mean  xˉ=12.3population standard deviation…

Q: A study analyzed the body fat percentage of 80 ISU students. The sample mean was 23.70 and the…

A:

Q: Is there a difference in the average age that people get married in the US and its close neighbor,…

A: a) Given, Suppose a random sample of 30 Americans had an average age of marriage of 28 years with…

Q: is used for testing hypothesis when the population standard deviation is known and the sample size…

A: Here's, sample size is given 30 and population standard deviation is known.

Q: A survey was conducted to determine the average number of hours that people spend on the internet…

A: GivenMean(x)=3standard deviation(s)=1sample size(n)=100significance level(α)=0.05

Q: Suppose the average number of tax returns processed by the IRS employees is 14 per day with a…

A: Given information:

Q: If a variable has a distribution that is​ bell-shaped with mean 16 and standard deviation 7 then…

A: given data  normal distribution μ = 16σ = 7 according to the Empirical​ Rule,68.0​% of the data will…

Q: The finish times for women in the 25-29 age group of the Hermosa Beach Triathlon in California are…

A: a).Given, For women, μw=5261σw=807 For men, μm=4313σm=583 Using empirical rule, the required middle…

Q: The mean age when people got married for the first time in the year 2000 was 26 years old with a…

A: Given, Mean μ = 26 Standard deviation σ = 6 Sample size n = 50 Sample mean x¯ = 27.7 Confidence…

Q: The mean age when smokers first start is 13 years old with a population standard deviation of 2…

A: Solution-: Given: μ0=13, σ=2, x¯=12.3, n=34, α=0.01=1% We want to find, (a) Null and alternative…

Q: Suppose that a garage samples 20 customers. They find the average time for there oil change is 4,227…

A: The objective of this question is to find the lower bound of the 90% confidence interval for the…

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

A: Given: n=16x¯=75s=6

Q: In a study of 110 women and 116 men, it was found that mean body temperature for women was 97.690 F…

A: From the provided information,

Q: The mean age when smokers first start is 13 years old with a population standard deviation of 1.8…

A:

Q: is 13 years old with a population standard deviation of 1.8 years. A researcher thinks that smoking…

A: Given : sample size, n = 31 sample mean, x̄ = 12.4 population standard…

Q: What is the typical age of a person who renews his or her driver’s license online? From a random…

A: Solution: Let X be the age of online renewal users. From the given information, x-bar=42.6, S=5.4…

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.