The COMPAS data was originally validated by Brennan on a sample size of 2328, and had a success rate of 0.68 (68%). Using the normal approximation of the Binomial distribution, calculate the 95% confidence interval? Group of answer choices 0.66 - 0.70 0.64 - 0.72 0.62-0.74 0.60-0.76

Q: A 93.32% Cl is given as (2.5, 3.5). From this information, find a 95% confidence interval (yes, this…

A: The provided information is as follows:The 93.32% confidence interval is (2.5,3.5).

Q: In a random sample of 810 women employees, it is found that 81 would prefer working for a female…

A:

Q: f. A sample of 60 Grade 10 students' ages was obtained to estimate the mean of all Grade 9 students.…

A:

Q: From a simple random sample of 400 of the 1,395 colleges in our population, it was found that…

A: Given : 1395 colleges in our population  Population Size (N) = 1395 400 colleges selected randomly…

Q: Lindsey selected a random sample of 25 tomatoes at the farmer's market. The 95% confidence interval…

A: When Lindsey selected a random sample of 25 tomatoes at the farmer's market, she was aiming to…

Q: Suppose that there are 1,395 colleges in the United States. From a simple random sample of 400 of…

A: It is given that sample mean is 320.8 and the sample standard deviation is 149.7.

Q: A researcher wishes to estimate the proportion of adults in the city of Hawalli who are vegetarian.…

A:

Q: The data below are the number of nuclear power plants operating in each of a sample of 10 states.…

A: The provided data, arranged in ascending order is, 1, 1, 1, 2, 3, 4, 6, 7, 10, 12 a. The mean and…

Q: In a random sample of 850​ Americans, 385 reported that they work two jobs. Which of the following…

A: The known values are, The sample proportion is,

Q: Suppose that the population of the number of hours slept by all college students the night before…

A: The sample size is 19, sample mean is 6.818, and sample standard deviation is 2.017.

Q: are vegetarian is 0.078. Find the margin of error for a 99% confidence interval.

A: Here given, A researcher wishes to estimate the proportion of adults in the city of Hawalli who are…

Q: A sample of size 84 was taken from a very large population. Sample statistics, x¯ and s, were used…

A:

Q: We are interested in comparing the average supermarket prices of two leading colas in the Tampa…

A: Obtain the 98% confidence interval for the difference in mean price of brand 1 and brand 2. The 98%…

Q: If a sample of n = 22 scores is being used to make an 90% confidence interval estimate of the…

A: Using t-table: Refer t-distribution table and look for the "t" value corresponding to degrees of…

Q: . A researcher collects a sample of 24 measurements from a population and wishes to find a​ 99%…

A: The degrees of freedom is,

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: A local health center noted that in a sample of 400 patients 80 were referred to them by the local…

A:

Q: If the sample mean is 70 and the standard error of the sample mean is 8, what will be the 90%…

A:

Q: Suppose that a 95% confidence interval for a population p = the population proportion of men who…

A:

Q: x= 143 s= 10; s2 = 81; s2 n= 70; x= 230.5 n= 90; n=200; = 124; x= 58.9 hree decimal places as…

A: a). The degree of freedom is calculated as: df=n-1=70-1=69 We see that for alpha=0.05 and df=69, the…

Q: Calculate the 90%, 95%, and 99% confidence intervals for this sample

A: It is given that Sample size n = 300 Sample proportion = 0.61 Th3 critical values of Z at 90%, 95%…

Q: An investigator computes a 95% confidence interval for a population mean on the basis of a sample of…

A: To find half of width, We need to calculate 4 times the sample Size.

Q: Find the 95% Confidence Interval for the following problems: a. 1.11+(2*0.01550)=1.141…

A: the 95% confidence interval is  mean ±α95%σnmean ±2*σn 95% confidence Z value taken 1.96 as 2

Q: a.) The individual object in the study was a randomly selected This is computer-graded so use exact…

A: Given,the 95% confidence interval for the average mean score in the final exam for each of the…

Q: . Jordan operates a dental practice with 315 patients and she would like to estimate the proportion…

A: Given X=30 n=75 Significance level=1-0.90=0.10

Q: roportion of adults in the city of Hawalli who are vegetarian. In a random sample of 13 adults from…

A: We have given that,  Sample size (n) = 713 and sample proportion (p̂) = 0.078 Then,  We will find…

Q: f. A sample of 60 Grade 10 students' ages was obtained to estimate the mean lot all Grade 9…

A:

Q: Consider the following samples of n = 5 from a population. Without doing any cal- culations, which…

A:

Q: A researcher constructs a two-sided 99% confidence interval (CI) on the mean of a normal…

A: decrease by a factor of approximately 0.64

Q: A simple random sample of 1000 people age 18 or over is taken in a large town. It turns out that 223…

A: From the provided information, Sample size (n) = 1000 223 people in the sample are newspaper…

Q: A simple random sample of 1000 people age 18 or over is taken in a large town. It turns out that 189…

A: The objective of this question is to calculate a 95% confidence interval for the percentage of…

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

A: Given at  99% confidence interval based on this sample is: 1.7 hours to 3.1 hours.  sample mean=?…

Q: A survey of 2450 golfers showed that 281 of them are left-handed. Construct a 90% confidence…

A: The objective of this question is to construct a 90% confidence interval for the proportion of…

Q: A researcher is attempting to calculate a 95% confidence interval for the number of blue Statsian…

A: Note: " Since you have asked multiple question, we will solve the first question for you. If you…

Q: For a sample with a mean of 10, a std of 5 and an n of 30, what is the lower bound of the 95%…

A: Given data, x=10σ=5n=30z-value at 95% confidence is Zc=1.96

Q: At a charter high school, the average GPA of a high school senior is known to be normally…

A: Solution: Let X be the GPA of a high school senior. From the given information, x-bar=2.85, S=0.16…

Q: In a sample of 100 college students, 25 of them own a car. Calculate the 95% confidence interval for…

A: The provided information are : x=25 n=sample size=100 The sample proportion is calculated as…

Q: What if we're able to use a normal model. To construct a 95% Confidence Interval, we use the…

A: Solution: From the given information, p-hat=0.38 and ME=0.096.