men Poo l #1 Pool #2 Pol # 3 Sunscreen 8. 13 wearers non Sunscreen wearers 31 27 19 Women Pool #1 Pool # 2 Pool #3 Sunscrcen 23 39 13 wearers non Sunscreen wearers 17 2. Claim: women are more likely to wear SPF than men. I went to three different pools over the course of one week and aSKed men and women if they were wearing Sun screen and the se were the results I got. Identify the null and altcrnative hypothesis. Find the test Statistic using the 2-distribuition formula Zニ • identify the p-value Spă + P ē Calculate 3 interpret the Confidence interval Con Clude reject or fail to reject the null hyPothesis * use o.05 % levei 6ff Significance

Q: Express the confidence interval (11.8 % , 18.6 % ) in the form of p + ME. %

A:

Q: If n - 180 and p (p-hat) = 0.3, construct a 99% confidence interval. Give your answers to three…

A: Find z-critical value:…

Q: Express the confidence interval (75.4 % , 87.6 % ) in the form ofp ± E.

A: The confidence interval for a population proportion/percentage is given as follows  (75.4%, 87.6%)…

Q: Express the confidence interval (48.7 % , 58.5 % ) in the form of p ± E.

A: Given information confidence interval (48.7%,58.5%)

Q: What is a Confidence Level? what is one example of the use of the Confidence Interval?

A: A level of confidence refers to the percentage of all possible samples which the true population…

Q: proportion of customers who uses their debit card at least once each month. A sample of 50 customers…

A: According to the given information in this questionWe need to construct 95 and 99% confidence…

Q: If n = 140 and p (p-hat) = 0.3, construct a 99% confidence interval. Give your answers to three…

A: Given that,The sample size is The sample proportion is The confidence level is

Q: How do we calculate the confidence intervals

A: Confidence interval is the interval that tells the range where the true value of proportion exist.…

Q: If n = 160 and p (p-hat) = 0.85, construct a 95% confidence interval. Give your answers to three…

A:

Q: Use the given confidence interval to find the margin of error and the sample mean. (4.55,9.01) The…

A: The confidence interval is.  (4.55,9.01)

Q: Determine from a confidence interval whether a test is significant?

A: Null hypothesis states that there is no difference between populations or a set of given…

Q: What can we do to make a confidence interval narrower without changing the confidence level?

A: Confidence interval:  A range of values such that the population parameter can expected to contain…

Q: Construct a confidence interval for p1-p2 at the given level of confidence. x1=365 n1=518 x2=413…

A: From the provided information,

Q: A development expert wants to use a one-sample z interval to estimate the proportion of women aged…

A: Given that, They take an SRS of 50 women from this population and find that 48 are literate.

Q: Express the confidence interval (45.7 % , 59.5 % ) in the form of p + ME.

A: From the provided information, Confidence interval is (45.7%, 59.5%)

Q: if for some reason it was not possible to obtain the 99% confidence interval from SPSS, how could…

A: Given information: Confidence level=99%=0.99α=1%=0.01

Q: How are z and t confidence intervals different? Choose one interval and give an example of how it…

A: Confidence interval for mean: When the sample size is large (n>30) and population variance (or…

Q: As the sample standard deviation increases when all other parts of the confidence interval stay the…

A: We want tell the sample standard deviation increases when all other parts of the confidence interval…

Q: Let us give a 95% confidence interval estimate for the population mean. If the sample mean is 1000…

A: Given Data: Sample mean(x¯)=1000 Standard error(SE)=50   Confidence Level=95%

Q: Explain when you would use the z value or the t-value to calculate a confidence interval

A: Z value: The z value is used for finding the confidence intervals for single population proportion,…

Q: Use the given confidence interval to find the margin of error and the sample mean. (13.0,21.2) The…

A: Confidence Interval C.I. = (13.0, 21.2)

Q: What happens in a confidence interval if the size of the sample increases the length of interval

A: WIdth of a confidence interval = W Margin of error = E

Q: Conditions For each situation described below, identify the population and the sample, explain what…

A: Hi! Thanks for posting the question. Since there are more than three sub-part questions, we will…

Q: What are confidence intervals?

A:

Q: Use the given confidence interval to find the margin of error and the sample mean. (13.0,20.4) The…

A: Plug in all the values in the formula, we get

Q: A 99% confidence interval is smaller in size than a 95% confidence interval because it is more…

A: Given  A true or false question based on confidence interval.

Q: Describe how a Confidence Interval might be a better piece of information to report from a study…

A: Confidence intervals provide information about a range in which the true value lies with a certain…

Average

In mathematics, everyone must have heard the term average in one place or other. Almost all types of calculation require taking out an average. In everyday life, the term is used for denoting a certain amount that can be said to be a typical quantity for multiple people or objects. In other words, if a group of people possesses a certain object, then the average gives us an idea regarding the quantity of the object possessed by each person. However, this is solely based on mathematical calculation. It is important to note that most people will not strictly have the average value in a group.