results of a survey show that the percent of adults in a certain town who want to add bike lanes to a major roadway is in the interval (0.57, 0.65).  If the town’s adult population is 31,526, what is the best estimate for the number of

Q: A medical researcher says that less than 79​% of adults in a certain country think that healthy…

A: Given: Sample size of adults (n) = 300 Proportion of adults who think that healthy children should…

Q: A medical researcher says that less than 72% of adults in a certain country think that healthy…

A: Given information: Sample size(n)=200. Sample proportion for healthy children's should be required…

Q: A private opinion poll is conducted for a politician to determine what proportion of the population…

A: Given  Confidence level(CI)= 0.95 Significance level (α)=1-0.95=0.05 Margin of error

Q: statistics

A:

Q: 50 people are selected randomly from a certain population and it is found that 17 people in the…

A: Given data, n=50 x=17 Point estimate(p)=?

Q: A survey of 250 households showed 41 owned at least one snow blower. Find a point estimate for p,…

A: Givena survey of 250 households showed 41 ownedat least one snow blowerHere n=250x=41

Q: A city official claims that the proportion of all commuters who are in favor of an expanded public…

A: Objective: To test whether this sample proportion is different from 50% or not. Setting of…

Q: 5% prediction interval for new-vehicle sales for d by Toyota is 2359 thousand. Use Microsoft exc…

A: By  using linear  regression,

Q: In a recent poll, 530 people were asked if they preferred cats or dogs. 59% said they preferred dogs…

A:

Q: structed to offer them a double-miles promotion. About 6% of all cardholders hold platinum cards,…

A: here given , Raaj works at the customer service call center of a major credit card bank. Cardholders…

Q: Insurance companies are interested in knowing the population percent of drivers who always buckle up…

A: formula for the sample size is

Q: A medical researcher says that less than 85% of adults in a certain country think that healthy…

A: For the  given data Perform Z test for one proportion

Q: Compute for the P-value.

A: here given, Mr. Dela Cruz, a product design consultant, claims that at least 10% of all sports…

Q: A medical researcher says that less than 78% of adults in a certain country think that healthy…

A: Solution : Given :  p = 0.78 ( population proportion )              P = 0.76 ( sample proportion)…

Q: A multinational firm hired a consultant to determine if the workers in their domestic plants were…

A: Given Information : A multinational firm hired a consultant to determine if the workers in their…

Q: AN OUTDOOR HOT DOG VENDOR SELLS AN AVERAGE OF 60  HOT DOGS PER DAY IN DRY WEATHER AND AN AVERAGE OF…

A: The outdoor hot dog vendor sells an average of 60 hot dogs per day in dry weather and an average of…

Q: How large a sample must a pollster take in order to estimate with 95% confidence and to within 3…

A:

Q: In a recent poll, 450 people were asked if they preferred cats or dogs. 52% said they preferred dogs…

A: Given data: n = 450  52% said they preferred dogs and 48% of people said they preferred cats, with a…

Q: llowing scores after 5 games: 196, 205, 197, 280 and 202.How much does the bowlers mean score…

A: Given: Score: 196, 205, 197, 280 and 202 Here, the outlier is 280. First of all mean with outlier:…

Q: A medical researcher says that less than 72% of adults in a certain country think that healthy…

A:

Q: A researcher wanted to estimate the difference between the percentages of users of two tooth- pastes…

A:

Q: The t test for the difference between the means of 2 independent populations assumes that the…

A: We have given that  The t test for the difference between the means of 2 independent populations…

Q: A statistics instructor believes that more than 20% of Evergreen Valley College (EVC) students…

A: Given: p=proportion of student attended the opening midnight show=0.20

Q: For the queation- "In fact, some new research suggests that to ensure a productive conversation the…

A: Explanatory variables The variables which explains the dependent variables known as explanatory…

Q: Travelocity would like to test if the average roundtrip airfare between New York and London is less…

A: It is needed to test, whether the average roundtrip airfare between New York and London is less than…

Q: A poll done for Newsweek found that 15% of Americans have seen or sensed the presence of an angel. A…

A: In statistic, Individual means, a thing on which the characteristics is studied. The total…

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

A: Solution : Given : n1 = 50 , n2 = 50

Q: umber of head and neck injuries sustained by hockey players. Of the 320 players who wore a…

A: Given, x1=190 n1=320 x2=252 n2=418 α=0.10

Q: To see if the average number of family-owned daycares per county is greater than the average number…

A: The study is about to see the average number of family-owned daycares is greater than the average…

Q: In a recent poll, 360 people were asked if they preferred cats or dogs. 49% said they preferred dogs…

A:

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: A medical researcher says that less than 77% of adults in a certain country think that healthy…

A: Claim: A. Less than 77% of adults in the country think that healthy children should be required to…

Q: A survey of 1000 U.S. adults found that 33% of people said that they would not get any work done on…

A: From the given information, P = 33% and n = 1000  Formula for confidence interval for true…

Q: A researcher daims that a post-lunch nap decreases the amount of time it takes males to sprint 20…

A: Given The data is as follows: Male Sprint time (without nap) Sprint time (with nap) 1 4.01 3.89…

Q: The flight from Greenville to Charlotte can take anywhere from 43 minutes to 68 minutes.  Suppose…

A:

Q: p-value of the test is

A: Given- Sample size (n)=10 Sample mean (x)=27 Sample standard deviation =5.5 Population standard…

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: In a one-tail test, the p-value is found to be equal to 0.0026. If the test had been two-tailed, the…

A: Here use basic concepts of p value

Q: If a police officer wants to find out whether the average speed of motorists on a highway with a…

A: Null hypothesis: It is a nullified statement about the population parameter. The signs that are…

Q: a pollster wnats to minimize the effect the order of the questions has on a person's response to a…

A: From the given information,   A pollster wants to minimize the effect the order of the questions has…

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: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.35…

A: The z-test determines the claim about one population proportion.

Q: The proportion, po, of foraging bumblebees not exposed to pesticides who bring very little pollen…

A:

Q: medical researcher says that less than 85​% of adults in a certain country think that healthy…

A: Given that  A medical researcher says that less than 85​% of adults in a certain country think that…

Q: A medical researcher says that less than 86​% of adults in a certain country think that healthy…

A:

Q: At a local pool, a new swimming instructor (Teacher 1) is being evaluated by how many of his…

A: From the provided information,

Q: A fast food restaurant boasts that their mean wait time in the drive-thru line is less than 3…

A: Given Information: Number of customers n=125 Sample mean wait time x¯=2.82 Population standard…

Q: A medical researcher says that less than 85​% of adults in a certain country think that healthy…

A:

Q: A medical researcher says that less than 81% of adults in a certain country think that healthy…

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.