Estimate the chance that the sample proportion was more than 45% using a normal approximation.

Q: The CEO of a company wants to estimate the percent of employees that use company computers to go on…

A: From the provided information, Sample size (n) = 150 60 of them logged Facebook that day that is x =…

Q: A research organization reported that 4141 percent of adults who were asked to describe their day…

A: Solution-: Given:  n=600,x=245,P0=0.41 Our aim to test that the data provide convincing statistical…

Q: A survey found that 73% of a random sample of 8344 American adults approved of cloning endangering…

A:

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A:

Q: A researcher found a 95% confidence interval for the proportion of college students who believe in…

A:

Q: A Seattle consumer agency believes that plumbers’ rates are too high and wants to estimate the mean…

A: GivenConfidence Interval(c)=95%Margin of Error(E)=3%=0.03Let…

Q: Most adults would erase all of their personal information online if they could. A software firm…

A:

Q: The personnel director of the Target Corporation wants to estimate the number of employees within…

A: Given that  Sample size n =80 Favorable cases x =4 Sample proportion p^=x/n  =4/80 =0.05

Q: A recent study shows that out of 5, 000 people who moved to Arizona, 2, 350 did so to take a new…

A: From the given information, sample size n = 1000. Total number of people moved n(S) = 5000. Number…

Q: A recent survey in the United States reported the prevalence of a sexually transmitted disease…

A: Given information- Sample proportion, p = 1.7% We have given 95% Confidence interval is = (1.4%,…

Q: A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many…

A: The formula for the sample size is as follows:

Q: A group of 400 randomly and independently selected cats were selected from a shelter to place in…

A: Given X=378 n=400

Q: For a population with a mean of 35 and standard deviation of 7, find the sample mean of size n = 20…

A: The formula to find the sample mean is, x¯=μ+zσn From the Standard Normal Table, the value of z for…

Q: If you want to be99​% confident of estimating the population proportion to within a sampling error…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of the…

Q: A federal report indicated that 17% of children under age 6 live in poverty in Nevada, an increase…

A: Given data, p=17%=0.17 E=2%=0.02 z-value at 99% confidence is Zc=2.576 n=?

Q: The digital marketing specialist would like to test the claim that the percent of customers who use…

A: Formula : Test statistic

Q: The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the…

A: From the provided information, Sample size (n) = 250 She would now like to determine whether or not…

Q: An experiment was conducted to investigate whether submersion in cold water causes a lower heart…

A: The objective of the question is to identify the missing elements of a well-designed experiment in…

Q: A pollster wishes to estimate the number of left-handed scientists. How large a sample isneeded in…

A:

Q: a random sample of 82 professional actors, it was found that 45 were extroverts. Let p represent the…

A: Let  X be number of extrovert out the number 'n' Then  Proportion of extrovert ( p^)= x/n

Q: A researcher wants to calculate the prevalence of Alzheimer’s among members of a specific community…

A: Solution: Given information: Margin of error = E= 0.01 Population proportion = p = 0.1073 Confidence…

Q: If the variance of a national accounting examination is 828, how large a sample is needed to…

A: Given data: Variance  = 828 Margin of error = 4 points Confidence level = 99 % To calculate the…

Q: A hospital administrator wants to estimate the proportion of patients whose hospital stay exceeds a…

A: Given Margin of error=0.06 P-cap=0.5

Q: A university dean wishes to estimate the average number of hours his part-time instructor teaches…

A:

Q: In a random sample of 500 adults, 410 described themselves as vegetarians. Construct a 95%…

A: We have been provided with the following information about the adults who describe themselves as…

Q: A report statesb that 44% of home owners had a vegetable garden. how large a sample is needed to…

A: Answer: Using the given data, A report stated that 44% of home owners had a vegetable garden, P =…

Q: If you want to be 95​% confident of estimating the population proportion to within a sampling error…

A: z-critical value at alpha(0.95) = 1.96 margin of error =0.08   p = 0.5

Q: A market researcher wants to estimate the amount of money that a Christmass hopper will spend on…

A:

Q: According to study conducted in Turkey in 2018, data collected by observers at randomly selected…

A:

Q: Most adults would erase all of their personal information online if they could. A software firm…

A:

Q: A pollster wishes to estimate the proportion of United States voters who favor capital punishment.…

A: The given data: The proportion of United states voters who favor capital punishment, p= 0.531 Margin…

Q: doctor wants to estimate the mean HDL cholesterol of all 20 to 29 year old females. How many…

A: Given s=11.2 E=2

Q: Suppose an advocacy organization surveys 847 Canadians and 444 of them reported being born in…

A: Given that: Sample 1(Canadians): x1=444n1=847 Sample 2(U.S. Citizens): x2=16n2=119

Q: Assuming the regression line: P = 0.8 - 0.2X Then, at the value of X=4 that the linear regression…

A: Ycap=0.8-0.2*X  We want to find the intercept on X axis. Note: According to Bartleby Expert…

Q: of their personal information online if they could. Make a subjective estimate to decide

A: Given : Sample proportion = p̂ = 0.508 Sample size = n = 560 Claim : Most adults would erase all of…

Q: The percent fo Coloradans that own a Subaru is 56%. If you were to take a random sample of size 70,…

A: We have given that,  Let X be the random variable from binomial distribution with probability (p) =…

Q: A pollster wishes to estimate the number of left-handed scientists. How large a sample is needed in…

A: It is given that margin of error (E) is 0.04 and the confidence level is 0.95.

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.