A college wants to know how much students prep for final exams. The college randomly samples 31 students and ask them their student habits for finals. The students had an average study time of 12 hours with a standard deviation of 10 hours. Can we use this to determine a 95% confidence interval for the average study time of all students for final exams? O Yes, (8.48, 15.52) O Yes, (8.33, 15.67) O Castro didn't cover this in lecture. No the sample size is too small and the distribution is not normal.

Q: You are looking to purchase a home in Lancaster, PA. In order to see what the average home will cost…

A: n= 35 Sample size  σ=$226312.40 Population standard deviation

Q: It currently takes users a mean of 44 minutes to install the most popular computer program made by…

A: Hypothesized mean µ = 44 minutes Sample size (n) = 51 Mean x̅ = 47.8 minutes Standard deviation (s)…

Q: You were interested to know how long do students of mathematics in the school spend studying their…

A: Given data is2,1.5,3,2,3.5,1,0.5,3,2,4sample size(n)=10

Q: It currently takes users a mean of 37 minutes to install the most popular computer program made by…

A: The objective of this question is to determine if the mean installation time for a computer program…

Q: A population is known to conform to a normal distribution with mean a-11.6 and standard deviation…

A:

Q: If a 90% confidence interval for the mean is found to be (1.25,4.75) using a sample of n=100, find…

A:

Q: The principal collects information on the annual family income for every single student who attends…

A:

Q: The university and the Team Up North both claims to have the highest attendance in the Big Fourteen…

A: Given n1=n2=31 S1=1242 S2=2258 X1-bar=105965 X1-bar=104291

Q: Mr. Jansen is a long jump coach extraordinaire! The jumping distances have been collected for a…

A:

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: 5 Colton and Jake began arguing about who did better on their tests, but they couldn't decide who…

A: Given information English class Colton Marks x = 72.9 Mean µ = 76.7 Standard deviation σ = 8.9 Art…

Q: Emily gets a score of 152, on average, in each game of bowling she plays, with a standard deviation…

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Q: Sandy gives the participants in her study a list of 24 words to remember. The mean an standard…

A: Given that:  The mean and standard deviation of the number of words recalled was 14 and 4…

Q: It currently takes users a mean of 3232 minutes to install the most popular computer program made by…

A:

Q: It currently takes users a mean of 44 minutes to insta made to the program, the company executives…

A: Sample size=51 Sample mean=47.8  Population mean=44 Standard deviation =10.2   Level of…

Q: Suppose a professor wants to know if students in her statistics class have a good grasp of basic…

A: Given: Sample size n=6 Sample mean x¯=∑i=1nXin=62+92+75+68+83+956=79.167 Sample standard deviation…

Q: Give a 95% confidence interval for the number of arrivals. (34.9,69.8) Suppose the computed 95%…

A: It is given that the computed 95% confidence interval is ( 34, 68 ).

Q: Use your own sample mean and sample standard deviation. A nutrition store in the mall is selling…

A: Testing the hypothesis about a population mean using the Z statistic σ known using following steps…

Q: Google is studying the quality of results returned by an upgraded version of its search engine.…

A: From the given information, it can be observed that x = 23 and n =100.

Q: What kind of tail distribution is the above statement?

A: Here Given Statement is  The average statistics score of  63 student is 96

Q: Using the 8 steps of hypothesis testing, determine whether there is a significant impact of being in…

A: Given information Sample mean x̅ = 27 Population mean µ = 30 Sample size = 100 Standard deviation σ…

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: A pollster asked a random sample of 269 students about their savings. The average amount of money…

A: The sample size is 269, sample mean is $258, and sample standard deviation is $145. The degrees of…

Q: It currently takes users a mean of 37 minutes to install the most popular computer program made by…

A: The hypothesized average time (in minutes) to install the program, μ0=37.The sampled number of…

Q: The incubation time for Rhode Island Red chicks is normally distributed with mean of 22 days and…

A: From the provided information, Mean (µ) = 22 Standard deviation (σ) = 3 Sample size (n) = 1000

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: For a 95% confidence interval, what value will you use for t*? Group of answer choices 1.960 2.030…

A: There are two types of houses, houses with a view of a nearby lake and houses with no view of the…

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

A:

Q: Nintendo is doing a classical game competition for the anniversary of Super Maria bros. The average…

A:

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: A sociologist develops a test to measure attitudes about public transportation, and 27 randomly…

A: Given,sample size(n)=27sample mean(x¯)=76.2standard deviation(s)=21.4degrees of…

Q: It currently takes users a mean of 2222 minutes to install the most popular computer program made by…

A: Claim : the new mean is now different from 22 minutes so that they can change their advertising…

Q: One hundred and twenty Americans were surveyed about how much time per month they spend watching…

A: From the provided information, Sample size (n) = 120 Sample mean (x̅) = 140 hours Sample standard…

Q: Heights of 130 singers in the NY Choral Society in 1979 were self-reported to the nearest inch. The…

A: The objective is to choose applicable option to use assumption of equal variances about SD is close…

Q: It currently takes users a mean of 26 minutes to install the most popular computer program made by…

A: In hypothesis testing, we start by stating the null hypothesis (H0) and the alternative hypothesis…

Q: A marketing agency wanted to determine if a new commercial changed people's opinion about a company.…

A: Statistical hypothesis means the decision about a population parameter. Here we look at the data we…

Q: At the local fish hatchery we take a random sample of 21 trout from one of the holding pens.  The…

A:

Q: Among the students of AUCA, 30% know two foreign languages. Find the mean and the standard deviation…

A:

Q: 83 students are asked in a survey how many hours they work during a week. Their responses have a…

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.