A random of families in a particular street resulted in the following family sizes 5,6,7,4,3,8,2, and 9, find the 95% confidence interval of the mean

Q: A study of 36 golfers showed that their mean score at The Links at Arundel was 83.  The standard…

A: n=sample size= 36 X¯=sample mean=83σ=sample standard deviation=5 So the point estimate=X=83   Since…

Q: 3- Car and Driver Magazine tested a random sample of 9 hybrid cars and found their MPG to be 42, 51,…

A:

Q: Each student drew a simple random sample of fifty students and created a 99% condfidence interval…

A: It is given that student has drawn a simple random sample of fifty students and created a 99%…

Q: Out of 300 people sampled, 156 had kids. Based on this construct a 90% confidence interval for the…

A: X = 156 N = 300

Q: In some population the interquartile range of the values of income (x) represents 41,9% of its…

A: Formula Used: Median = L+n2-CFf×h Quartile deviation Q = Q3-Q12 First quartile Q1 = L + n4-CFf×h…

Q: Construct a confidence interval for the mean of the paired differences for the two populations with…

A: Solution: From the given information, n=32, d-bar=1.358, α=0.05 and sd=0.635.

Q: Out of 400 people sampled, 32 had kids. Based on this, construct a 95% confidence interval for the…

A: Solution: Let X be the number of people had kids and n be the sample number of people. From the…

Q: In a survey of 1005 adults 526 stated construct a 95% confidence interval

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Q: Out of 200 people sampled, 42 had kids. Based on this, construct a 95% confidence interval for the…

A: For 95% confidence intervalα=1-CI=1-0.95=0.05So, zα2=z0.052=z0.025=1.96

Q: he average weight of 20 randomly selected cars was 3500 pounds. The sample standard deviation was…

A: given data, n=20df=n-1=20-1=19x¯=3500 pounds s=315 pounds CI=0.90α=1-0.90=0.10

Q: A 95% confidence interval for the mean was computed with a sample of size 90 to be (16,22). a. What…

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Q: In a study of work patterns, data from 669 subjects were collected. For the time spent in child…

A: We have given that,  Let X be the random variable from normal distribution with mean (μ) = 23.08,…

Q: In a random sample of 42 Pa high schools it is found that the average number of students is 279.…

A: Given: n=42, x=279 and σ2=206. The value of z at 93% confidence level is 1.81.

Q: A random variance survey of 495 adults found that 59 had diabetes. which of the following is a 98%…

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Q: the following sample was taken from a normally distributed population: 20,27,15,2016,22 and 13. A…

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Q: Calculate a 95% upper confidence bound for the mean of a normally distributed population using the…

A: Given that, x = 32289  s = 2846  n=15  For 95% confidence interval,the z value is 1.96

Q: 324 out of a simple random sample of 400 students hated their online math course. Find a 99%…

A: Given: Number of students that hated the online math course (y) = 324 Number of students (n) = 400…

Q: The baseball coach tracked how long it took 8 of his players to do a series of drills.  The times…

A: We have given the times recorded (in minutes) of 8 players.

Q: when 282 college students are randomly selected and surveyed, it is found that 109 own a car. find a…

A: It is given that sample size (n) is 282 and x is 109.

Q: The daily salaries of security guards for 10 security agencies are as follows: P350, P400, P375,…

A: Solution To find the point estimate we will find the sample mean.

Q: A random sample of high school students is used to estimate the mean time all high school students…

A: Solution: From the given information, a 99% confidence interval is 1.7 hours to 3.1 hours.

Q: the following random sample was selected from a normal distribution: 11, 16, 3, 13, 18, 18, 16, 19,…

A: Given data is11, 16, 3, 13, 18, 18, 16, 19, 17, 11sample size(n)=10

Q: andom sample of 1200 high school freshmen was taken and it was found that 559 of them were reading…

A: The population proportion (p) will be proportion of high school freshman who reads at or above their…

Q: I asked 45 randomly selected WSU college students how many US states they had visited. The students'…

A: The sample size is 45, sample mean is 3.8 and standard deviation is 1.5. The degrees of freedom is,…

Q: In a sample of 85 statistics students, 41 said that finding confidence intervals for population…

A: It is given that x is 41 and sample size (n) is 85. The confidence level is 0.99.

Q: 26 randomly selected students took the calculas final. If the sample mean was 90. Construct a 95$…

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Q: You receive a brochure from a large university. The brochure indicates that the mean class size for​…

A: Sample size is, Population mean is Confidence Level is The objective is to test the claim that the…

Q: Out of 300 people sampled, 279 had kids. Based on this, construct a 90% confidence interval for the…

A:

Q: 3. A random of families in Solano St. Intramuros, resulted in the following family sizes: 5, 6, 7,…

A: Given data  observations : 5,6,7,4,3,8,2,9 we have to construct 95% ci for mean.  sample size (n) =…

Q: Twenty-four fast-food restaurant hourly employees were surveyed to see how many hours they worked…

A: x=41.625

Q: Out of 100 people sampled 48 had kids. Based on this construct a 90% confidence interval for the…

A:

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.