You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 95% confident that you estimate is within 5% of the true population proportion. How large of a sample size is required? Hint: Video [+] n =

Q: You asked tea consumption preferences for men ans women in Altinbas University. You have the…

A: From the provided information, n1women=20x1=43.5s1=3.2n2men=20x2=40.1s2=4.1

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A: E(X)=2 E(Y)=2 var(X)=2 Var(Y)=2

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A: The sample observations of the TV-watching time (in hours) are given as follows: 1.9 2.3 2.2…

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Q: Best Actress 27 29 28 65 32 34 45 Best Actor 45 39 37 28 59 23 46 47 52 50 64 51 38 56 42 Print Done…

A: Best Actress(x) Best Actor(y) 27 45 29 39 28 37 65 47 32 52 34 50 45 64 28 51 59…

Q: queation asking is expected value

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A: It is given thirteen of the 100 digital video recorders in an inventory are known to be defective.

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A: Given the data containing Age, Gender, Systolic, Diastolic, HDL, LDL, Weight, Height and, BMI of 88…

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A: To find the regression line, we have: x y 11 7.71 7 6.86 11 12.77 8 7.17 12 7.65 14…

Q: A survey was conducted that asked 1018 people how many books they had read in the past year. Results…

A: sample size(n)=1018  Mean(x)=14.3 standard deviation(s)=16.6 confidence level=90%

Q: Find the p-value based on a standard normal distribution for each of the following standardized test…

A: a)z=-1.10 left tailed test b)z=4.08 right tailed test c)z=-1.49 two tailed test

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A: According to the question, in part (a) we have to find the equation of regression line using all the…

Q: Consider the following 2020 grocery store sales data. For each, find the residual (error).​ ​…

A: Here Given Regression equation for  grocery stores sales data y= 1170*x+ 30630 where  x= No of years…

Q: A computer monitors and records how many rings it takes for an operator at a large food products…

A: Margin of error(E)=2 confidence level=90%

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A:

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A: Present research proves there is a difference in the outcomes of couples therapy, which couples…

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Q: What is the expected bonus you will receive?

A: Here given probability mass function for random variable X X = No of star given by user in review .

Q: Let X and Y be independent random variables such that E(X)=2, E(Y)=2, var(X)=2, and var(Y)=2…

A: Let X and Y are independent varaibles E(X)=2 E(Y)=2 Var(X)=2 Var(Y)=2

Q: (a) What is the expected count for non-athletes with the RR genotype? For this cell, what is the…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

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A: n=2750 X=1442

Q: Let X₁, X₂,..., X150 be independent identically distributed (i.i.d.) random variables, each with…

A: Let X1, X2,..., X150 be independent identically distributed (i.i.d.) random variables, each with…

Q: What does February 2020’s actual grocery store sales value tell us about the strength of this model…

A:

Q: What is the 87% confidence interval for the population proportion of people that would buy the new…

A: Sample size n =150 Favorable cases x =122 Sample proportion p=x/n =122/150 =0.8133 2): Hypothesis…

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A: The data shows the costs of advertising and the number of products sold.

Q: For a confidence level of 99% with a sample size of 27, find the critical t value.

A: We have confidence level C=99%=0.99 Sample size n=27  then to find critical t value

Q: Consider the linear regression model y = β0 + β1x + u, where the regressor x may be correlated with…

A:

Q: onsider the following 2020 warehouse store sales data. For each, find the residual…

A: Here Given Regression equation for  ware house sales data y= 2090x + 6740 where  x= No of years…

Q: 7. Random Numbers. Many random number generators allow users to specify the range of the random…

A: In this case, the variable of interest is defined as the value assumed by the random number (i.e.,…

Q: Suppose a brewery has a filling machine that fills 12-ounce bottles of beer. It is known that the…

A: Mean=M=12.27, Standard deviation=S=0.04 P(X>x)=1.5%=0.015

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A: Let us consider one sample with normal approximation. Let each observation in the sample is taken…

Q: Suppose that a vending machine automatically pours soft drinks into paper cups. The amount of soda…

A: Population mean, μ=6.5 Population sd, σ=0.4

Q: A product shipment contains 6 computer chips, of which two (2) are defective. If an inspector…

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A: Given that 110 adults with gum disease were asked the number of times per week they used to floss…

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A: Suppose p is the true population proportion of driver fatalities related to alcohol.

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Q: 1.  Explain under what conditions a researcher would use a One-Way Between-Subjects ANOVA. 2.  A…

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A: Given that,  X~ Binomial (n= 10, p= 0.3)

Q: What percentage of the area under the normal curve is between the following z-scores? Z1= -2.39 Z2=…

A: Z1=-2.39Z2=1.03

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A: Probability of catching flu (p) = 0.48 Null hypothesis H0 : p = 0.48 Alternative hypothesis H1 : p…

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A: Solution-: Given: n=7,s=0.129, c=0.90 We want to construct a 99% confidence interval for the…

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A: The values of x and y are given for 5 observations.

Q: The equation of the regression line between two variables x (independent variable) and y (dependent…

A: The given correlation coefficient is r=-0.95.

Q: Find the regression equation, letting the first variable be the predictor (x) variable. Using the…

A: The independent variable is age of best actress (x) and the dependent variable is age of best actor…