According to Thomson Financial, last year the majority of companies reporting profits had beaten estimates. A sample of 162 companies showed that 94 beat estimates, 29 matched estimates, and 39 fell short.   (a) What is the point estimate of the proportion that fell short of estimates? If required, round your answer to four decimal places.   pshort =  (b) Determine the margin of error and provide a 95% confidence interval for the proportion that beat estimates. If required, round your answers to four decimal places.   ME =    Confidence interval:   to  (c) How large a sample is needed if the desired margin of error is 0.05? If required, round your answer to the next integer.   n* =

Q: Ninety-four percent of students said that cash is their top choice for a graduation gift. If 75…

A: It is given that sample size (n) is 75and the sample proportion value is 0.94.

Q: Out of a sample of 600 adults aged 18 to 30, 162 still lived with their parents. Based on this,…

A:

Q: In 2016 the CDC wanted to estimate the proportion of adults who are smokers in the U.S. The…

A:

Q: In a sample of 460 adults, 262 had children. Construct a 95% confidence interval for the true…

A: Provided information: Total number of adults = 460 and 262 had children 95% confidence level

Q: Out of 100 people sampled, 77 had kids. Based on this, construct a 95% confidence interval for the…

A: We have to find 95% confidence interval for the true population proportion of people with kids.

Q: A survey of 700 non-fatal accidents showed that 167 involved uninsured drivers. Construct a 99%…

A: Given data,n=700x=167Point estimate isp=xn=167700=0.2386Construct a 99% confidence interval?

Q: A national polling organization surveyed 1000 Americans and found that 350 admitted to being guilty…

A: Given: x=350 n=1000 p^=xn=3501000=0.35

Q: Out of 400 people sampled, 240 had kids. Based on this, construct a 95% confidence interval for the…

A:

Q: According to the American Cancer Society, in 2016 10.7% of the U.S. working population commute to…

A: From the provided information, In 2016, 10.7% of the U.S. working population commute to work by…

Q: Out of 240 sample students surveyed, 187 students are planning to take classes during the…

A: We have given that the sample size n=240 and favourable cases X=187. Sample proportion p^ = X/n.

Q: You plan to construct a 90% confidence interval for the proportion of all middle school students who…

A:

Q: A survey of 26 individuals found that they spent an average of $39.21 on exercise attire for the…

A: Confidence interval is an inference process which is used to estimate the population parameter. The…

Q: According to Randall Financial, through April 25, 2018, 64% of companies reported profits had…

A: The proportion is 0.64, margin of error is 0.05, and confidence level is 95%. Computation of…

Q: construct a 95% confidence interval for the true population proportion of people with kids.

A:

Q: Out of 100 people sampled, 35 had kids. Based on this, construct a 95% confidence interval for the…

A:

Q: In a sample of 110 adults, 76 had children. Construct a 95% confidence interval for the true…

A: It is given that, in a sample of 110 adults, 76 had children. It is needed to find a 95% confidence…

Q: In a clinical trial of a certain drug, 27 subjects experience headaches among the 219 subjects…

A: From the given information,

Q: The Bureau of Alcohol, Tobacco, and Firearms (BATF) has been concerned about lead levels in…

A: Given, Range = 49 to 720 Margin of Error E = 10 at 90% confidence level  α = 0.1Critical value Zα2 =…

Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

A: Confidence interval is probability, which refers that population parameter will fall within set of…

Q: Convert answers to percents and round to 2 decimal places. Example: 0.387582 is 38.76% 23. A simple…

A: Given Information: Sample size n=1825 Out of which x=1304 people said that they support the tax.…

Q: According to Thomson Financial, through January 25, 2018, the majority of companies reported profits…

A: The sample proportion of companies showed beat estimates is, p^=104162=0.6420 The sample proportion…

Q: Correlations Interpersonal Perception Accuracy: All (#Correct) Static Facial Emotion Pearson…

A: Decision rule : significant correlation if P-value  <  α Here  P-value = 0.015 < 0.05 = α.

Q: The mean cost of a meal for two in a mid-range restaurant in Tokyo is $40 (Numbeo.com website,…

A: Given the mean cost of a mean for two in mid- range restaurant in tokyo is $40.The data for cost of…

Q: Out of 200 people sampled, 10 had kids. Based on this, construct a 95% confidence interval for the…

A: Sample size Out of which  had kids.The objective is to construct  95% confidence interval for the…

Q: A random sample of 2000 car owners in a particular city found 740 car owners who received a speeding…

A:

Q: Suppose you calculate a 95% confidence interval for a proportion to to be: 0.39 to 0.78. Determine…

A: Given,   Lower bound = 0.39​ Upper bound = 0.78   Here, we use to determine the margin of error.

Q: If n = 15, the sample mean = 150, SD = 10, what is the confidence interval (using 99% confidence…

A: Given data,n=15x=150σ=10z-value at 99% confidence is Zc=2.576

Q: Critical Value: Margin of Error: Lower Bound: Upper Bound: Interpret (context) OEM C *2 decimals *2…

A: * Hi! Thank you for the question As per the honour code, We’ll answer the first question since the…

Q: Out of 300 people sampled, 24 had kids. Based on this, construct a 95% confidence interval for the…

A:

Q: Write a linear approximation (equation) for the US data. First, clearly define your variables. Use…

A: Let t denote year and N denote demand in US. The data is as follows t N 1 13.1 2 13.66 3…

Q: The actual percentage of Americans who support same-sex relations is an example of a(n) a.…

A: Estimation is a process whereby we select a random sample from a population and use a sample…

Q: Out of 500 people sampled, 95 had kids. Based on this, construct a 90% confidence interval for the…

A:

Q: In a sample of 480 adults, 384 had children. Construct a 99% confidence interval for the true…

A: The random variable adults with children follow normal distribution. We have to construct 99%…

Q: Out of 500 people sampled, 145 received flu vaccinations this year. Based on this, construct a 90%…

A: We have given that  Sample size n=500 , favorable cases x=145 90% confidence interval  Sample…

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.