A sample of students is to be selected to estimate the proportion who have recieved a medical examination during the past year.  The survey found that x =567 students were examined during the past year.  Construct a 95% interval estimate of the population proportion if the sample size was n=700

Q: In a survey, the planning value for the population proportion is p* = 0.25. How large a sample…

A: Given that  Margin of error =E =0.04 Population proportion p=0.25 95% confidence

Q: Find the proportion of N.d. observations with a zz-score between z1​= 0.53 and z2​= 3.11. Give your…

A: given data z1=0.53 and z2=3.11

Q: Denote the sample as X1,...,Xn is exponentially distributed Show the distribution of X-u in deitels

A: Given  Sample asx1 , x2 , ....... , xn is exponentially distributed

Q: A population with a mean of µ= 8 has EX=40. How many scores are in the population

A:

Q: A physician wants to test if temperature has an effect on heart rate. In order to do this, she…

A: In this question, it has been given,Test Statistics = 5.627Level of significance = 0.05Rejection…

Q: At any age, about 20% of American adults participate in fitness activities at least twice a week.…

A: Given Information: About 20% of American adults participate in fitness activities at least twice a…

Q: Three-fourth of the students in the class have an average lQ of 120 and the rest have an average IQ…

A:

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: The formula for the sample size is as follows: Here,zα/2 is the critical value at 95% confidence…

Q: How large the sample size should be in order to be 98 percent confident, if the sample proportion is…

A: Given data, p=0.78 E=0.16 z-value at 98% confidence is Zc=2.326 n=?

Q: A population with a mean of u = 8 has EX = 40. How many scores are in the population?

A: It is given that the mean is 8 and sum of X is 40.

Q: Out of 1000 residents of Eagle County surveyed, 590 of them feel that their children receive a good…

A: There are two independent samples which are Eagle County and Beaver County. We have to construct 95%…

Q: What is the CALCULATIONS FOR THE t TEST?

A:

Q: If you obtained a test score of 78 on a test with an average test score of your class is 70, and SD…

A: Given, -x = 70 SD = 4 n = 36

Q: chi-square test for goodness of fit has df = 4. How many categories were used to classify the…

A: Given that ; chi-square test for goodness of fit has df = 4. By using the concept of chi- square…

Q: A population has µ = 50. Which value of o would make X = 55 an extreme value out in the tail of the…

A: Part 1: Given μ=50              To find for what value of σ, X=55 will be an extreme value In the…

Q: In a class of 50 students, Heather has a rank of 14. At what percentile is she? Heather has a…

A: According to the provided information, B = 14 N = 50

Q: A random sample of 354 persons showed that 206 do not have health insurance. Calculate the point…

A: Given data,n=354x=206p=?

Q: Diastolic blood pressure in adults is normally distributed with m = 80 mm Hg and s = 12 mm Hg. In a…

A: The probability that diastolic blood pressure below 70 mm Hg is,

Q: Below is the table for the incidence of lung cancer following exposure to asbestos dust. We will…

A:

Q: A survey of 100 fatal accidents showed that 28 were alcohol related. Find a point estimate for​ p,…

A:

Q: Twenty formulations of a coating are being tested to see if any of them reduce gear wear. For the…

A: There are 20 formulations of a coating are being tested to see if any of them reduce gear wear. The…

Q: A researcher reports an F-ratio with df = 1, 24 for an independent-measures experiment. If all the…

A:

Q: The Department of Health wishes to determine the percentage, p, of the general population who are…

A: Given : The test for Cooties is known to be 99% accurate given that a patient is infected and 90%…

Q: Find the z-score associated with the ACT score X = 26 %3D Find the ACT score from the dataset…

A: Our aim is to find the following :  (a) Z-score for X=26 (b) ACT score for Z=1.064

Q: S For n= 15, the margin of error for an estimate at an alpha level of 2% is +2.249 15

A:

Q: A certain test is worth 125 points. How many points (rounded to the nearest point) are needed to…

A: Test of worth=125 pointneeded=75 %

Q: In research about the population of a county with 100,000 inhabitants, a sample of 3000 households…

A: According to the provided data, a total of 3000 households were contacted to participate in the…

Q: A researcher wishes to estimate the proportion of adult males who are less than 5 feet 5 inches…

A: It is given that margin of error (E) is 0.04 and the confidence level is 0.90.

Q: d. Give a 95% interval estimate of the number of fatal accidents per 1000 licenses in a city where…

A: Solution:  Given information: n= 42  Sample size  MSE= 0.3473  Mean square  error  The degree of…

Q: The manager of an orchard expects about 82 percent of her apples to exceed the weight requirements…

A:

Q: 1. Use the results of the simulation to approximate the margin of error for Javier's estimate of the…

A: Here we have to calculate margin of error Assuming the confidence Interval = 95% Sample Size  = 500…

Q: A student at Tolland High School wondered if boys or girls at her school traveled a greater distance…

A: Given: Sample size for girls = 50 Sample size for boys = 50 The concern is to check the average…

Q: Con side that the ten Percent of indlividuals getting tested for the Virus, have the Virus. Now…

A: Let A be the event denoteds the person having virus and B be the event denote the event the person…

Q: A researcher reports t(22) = 5.30, p <.01 for an independent-measures research. How many individuals…

A: From given that , A researcher reports t(22) = 5.30, Degrees of freedom  df = 22

Q: The American Heart Association is about to conduct an anti-smoking campaign and wants to know the…

A:

Q: A physician has to prescribe a dose of preventive medicine to all adult women in a town but has to…

A: The physician has taken a random sample of size 6 from a population having mean BMI μ(say). On the…

Q: The Humane Society is interested in finding out how many households in America have at least one…

A: The provided information are: Confidence level = 95% = 0.95 Margin of error (E) = 4% =0.04 From the…

Q: Miss Piggy, trying to prove that she is not just a pretty face, urged all of the Muppets to apply to…

A: Hai

Q: A woman who smokes during pregnancy increases health risks to the infant so that it is nown that…

A: Note , Since you have posted a question with multiple sub-parts, we will solve first three sub-parts…

Q: A population with a mean of u = 8 has EX 40. How many scores are in the population?

A: From the provided information, Mean (µ) = 8 ∑X = 40

Q: When X; only takes two values {0, 1}, what are the possible values of the estimates of p?

A: Solution : Given that , X1,X2,...........Xn be a random sample from population.Considering…

Q: What is the value of SS for this sample?

A: Given: n = 4  Σ X = 4 Σ X 2 = 32 The formula to calculate the SS is as follows:

Q: In a class in which the final course grade depends entirely on the average of four equally weighted…

A:

Q: µ = 9 has Σ X = 54. How many scores are in the populatio

A: Given that   A population with mean (μ) = 9 Summation of data values  Σ X = 54   We know that Mean =…

Q: Find the proportion of N.d. observations with a zz-score between z_1 =z1​= -2.45 and z_2 =z2​= 2.71.…

A: Given Z1=-2.45 Z2=2.71

Q: In research about the population of a county with 100,000 inhabitants, a sample of 3000 households…

A: The number of households not willing to participate in the survey is 1200.

Q: With no preliminary estimate of the proportion known, how many young adults would you survey to…

A: It is given that margin of error (E) is 0.10 and the confidence level is 0.99.

Q: The distribution of the weights of a sample of 1,400 cargo containers is symmetric and bell-shaped.…

A:

Q: A poll summarized the results of a survey of 2,400 adults and 500 teens aged 13 to 17. It was…

A: Confidence interval explains the range where the true parameter lies. It is calculated by the…

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.