"Trydint" bubble-gum company claims that 3 out of 10 people prefer their gum to "Eklypse". Test their claim at the 90 confidence level. The null and alternative hypothesis in symbols would be H0:p=0.3 H1:p≠0.3 The null hypothesis in words would be: The proportion of all people that prefer Trydint gum is 0. Based on a sample of 100 people, 25 said they prefer "Trydint" gum to "Eklypse". The point estimate is:  0.250 The 90 % confidence interval is:  to  (to 3 decimals) Based on this we: Reject the null hypothesis Fail to reject the null hypothesis

Q: recent survey showed that among 725 randomly selected subjects who completed 4 years of college, 139…

A: Given that  n = 725 , Smoke = 139 , Not smoke = 586

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Q: A survey conducted on a certain website indicated that 52.9% of the people visiting this website…

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Q: Let's say you survey a random sample of people. You find that 53% prefer apples over oranges. You…

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Q: A random sample of 230 people living in Seattle found that 83 of them had a pet. A random sample of…

A: Solution: Given information: n1= 230 Sample size of people iving in Seattle n2= 172  Sample size of…

Q: In a sample of 100,40 said they preferred Pepsi to Coke. A 95% confidence interval for the…

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Q: Suppose that the a college wants to have an idea of the average SAT score of the incoming freshman…

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Q: A survey conducted on a certain website indicated that 49.3% of the people visiting this website…

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Q: In a sample of 100, 40 said they preferred Pepsi to coke. A 95% confidence interval for the…

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Q: If n=41n=41, ¯xx¯=36, and s=9s=9, find the margin of error for a 80% confidence level.

A: Answer - Given, Sample size n = 41,    x  = 36    and s = 9               80% confidence interval…

Q: A researcher wanted to check whether the percentage of Canadian adults with obesity has decreased in…

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Q: A sample of 23 plants was taken and the mean height was 27 cm. A 95% confidence interval for the…

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Q: 13. This summer, when I was doing gardening, I got some seeds. The packet with seeds said that 95%…

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Q: What is the value of Z for this confidence interval?

A: Given,sample size(n)=14795no.of people who said yes=2219no.of people who said no =12576

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Q: Last year your professor taught economics courses to N = 200 students. From this group you randomly…

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Q: A sample of 700 from population A has a proportion of interest of 0.24 while a sample of 600 from…

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Q: The proportion of people changing residence in the USA each year is 0.165. A researcher believes…

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Q: Construct the 90% confidence interval for the difference p1-p2 when x1=45, n1=85, x2=20, and n2=65.…

A: Given Information: x1=45n1=85x2=20n2=65c=90%=0.90

Q: In a random sample of 145 students, we find that 53% have attended a baseball game at some point in…

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Q: A survey of 225 randomly chosen commuters are asked if they support an expanded public…

A:

Q: You have 16 vampire bats. These bats have a population variance of 3.4 ounces. You wish to make a…

A: Given: Sample size (n) = 16 Population variance σ2=3.4 Sample mean x¯=15.20 Confidence level = 0.950

Q: Construct the 99.8% confidence interval for the difference P1 - P2 when x, = 23, n, = 53, x2 = 15,…

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Q: If n= 220, p-hat= .4, then what will be the 87.4% confidence interval for the population proportion?

A:

Q: A sample of 1100 observations taken from a population produced a sample proportion of 0.36 . Make a…

A: Given information Sample proportion = 0.36 Sample size (n) = 1100

Q: If N=480 and p̂ (p-hat) =0.88, find the margin of error at a 95% confidence level.

A: From the provided information, Sample size (n) = 480 p̂ (p-hat) =0.88 Confidence level = 95%

Q: If n = 440 and p = 0.52, construct a 90% confidence interval. %3D Give your answers to three…

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Q: Suppose that you will be taking a random sample from a population and that you intend to find a 95%…

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Q: Let's say you survey a random sample of people. You find that 53% prefer apples over oranges. You…

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Q: A sample of freshman takes a reading comprehension test and their scores are summarized below.…

A:

Q: An insurance company selected samples of clients under 18 years of age and over 18 and recorded the…

A: Given Information: Under age of 18  n1=480 x1=160 Over age of 18 n2=500 x2=140

Q: Suppose we wish to construct a 95% confidence interval for the population proportion of fans in…

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Q: An inspector inspects large truckloads of potatoes to determine the proportion with blemishes prior…

A: Given, The total sample size, n = 90 No. of blemishes, x = 12 Therefore p^=xn = 1290 = 0.133 Also,…

Q: suppose a random sample of 50 basketball players have an average height of 78 inches. Also assume…

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Q: You are comparing men and women on hours spent watching TV. You pick a sample of 12 men and 14 women…

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.