A researcher wishes to estimate the number of households with two computers. How large a sample is needed in order to be 90% confident that the sample proportion will not differ from the true proportion by more than 2%? A previous study indicates that the proportion of households with two computers is 45%. O 1521 1674 O 1702 O 2377

Q: Find P31, which is the score separating the bottom 31% from the top 69%. P31 =

A: Given: μ=146.5σ=34

Q: QUESTION NO. 1 If 30% of the bolts produced by a machine are defective, determine the probability th...

A: For the given problems using binomial distribution

Q: Asking for some relevant work to be shown for each question. 1. The test statistic of the si...

A: For the given statements select the correct choices

Q: From the following table, find the mean, median and m modal ages of married women at first child bir...

A:

Q: Construct a 90% confidence interval estimate of the true proportion all months of Febuary that the r...

A: It is given that Sample size n = 35 Number of times rain fell, X = 21 The critical value of Z at 90%...

Q: Amanda loves 80's music and 22% of the songs on her Spotify library are from the 80's. Suppose that ...

A: Given - Sample Size = n = 50              Sample proportion = p = 22% = 0.22            Mean =    μp...

Q: A researcher hypothesized that children's cholesterol levels may be affected by educating their pare...

A: The z test is used to test whether there is any significant relationship between the sample and popu...

Q: 6. Calculate Coefficient of Correlation between the values of X and Y given below: Values of X: 65 6...

A:

Q: If P(A) = 3/4 and P(B) = 5/6, then P(A and B) = а. %3D

A:

Q: -. LET US PRACTICE Activity 1: Determine the mean or expected value of each Random Variable. 1) 3. 4...

A:

Q: Consider the following joint probability density function of the random variables X and Y. Are X and...

A: Given: f(x,y)=3x-y9       1<x<3, 1<y<20                  elsewhere

Q: 4. From the data given below, find out the value of Y when X 35 10 20 30 40 50 60 70 90

A: X Y X.Y X.X 10 50 500 100 20 60 1200 400 30 70 2100 900 40 90 3600 1600

Q: Calculate the median and mode of the following data : No. of days absent No. of students Less than 5...

A:                

Q: a) GetFood (a food delivery company) wants to include a game in its' mobile app as a marketing campa...

A:

Q: Provide an appropriate response. If A, B, C, and D, are the ly possible outcomes of an experiment, f...

A: Solution

Q: A large fast-food restaurant is having a promotional game where game pieces can be found on various ...

A: Given : Probability of winning a prize (large to small) with any eligible purchase is 0.182 i.e Prop...

Q: Lesson: ESTIMATING POPULATION MEAN μ WHEN σ IS UNKNOWN OR ≥ 30 Please give a clear and understandab...

A: Givensample size(n)=20mean(x)=20standard deviation(s)=1.2confidence interval = 90%

Q: There are 5000 undergraduates registered at a certain college. Of them, 503 are taking one course, 6...

A: Given: Total number of students =5000 Number of students taking one course =503 Number of students t...

Q: A university requires its biology majors to take a course called BioResearch. The prerequisite for t...

A: Note: According to Bartleby expert guidelines, we can answer only first question with their three su...

Q: Find U, V, W, and the percentage total of the shaded region.

A: Here use basics of standard normal distribution and empirical Rule

Q: All events are dependent. Find the probability in question. 1. 7 1 m P(B| A) = 20 find P(A and B) 4'...

A: Given,P(A)=720  ,  P(B|A)=14  

Q: contains 7 red balls, 6 green balis4 yellow balls and 3 purple ballsAssuming you don't return balls ...

A: Box contains 7 red,6 green,4 yellow, 3 purple  10 balls are drawn at random without replacement then...

Q: Suppose Z follows the standard normal distribution. Use the calculator provided, or this table, to d...

A:

Q: What is the probability that the person is less than 19 years old? What is the probability that the ...

A: Given Information: Age group No. of people Under 10 257 10 to 18 460 19 to 30 175 more th...

Q: Dane recently decided to start up a new company offering insurance for people's smartphones. He has ...

A:

Q: Find the missing figure in the following data : Year 1950 1955 1960 1965 1970 Sales of Cloth 250 285...

A:

Q: If 40 is added to cach of a set ofr 25 values, the Coefficient of Variation changes to 40 % and if i...

A:

Q: With the growth of internet service providers, a researcher decides to examine whether there is a co...

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for y...

Q: the researchers measured each participant's heart rate. The dependent variable in this study is:

A: Unnithan, Houser, and Fernhall (2006) were interested in whether playing the game Dance Dance Revolu...

Q: Calculate the median from the following data: Mid. values Frequency Mid. values Frequency 15 65 7 25...

A:

Q: Predict the salary for a graduate with 5 years of expe

A: Given information: Intercept=56.0786946 Experience coefficient=2.36826108 Regression Equation: Salar...

Q: Assume the height of students are normally distributed, do boys and girls differ in height in one cl...

A:

Q: What are the chances that no Clarks ille runner hill finish in toe 32

A: Here total 9 runners  And top 3 are selected,  so it is without replacement model  So here use hyper...

Q: Find the area of the shaded region

A: here given curve represent normal curve 

Q: A principal of a college wants to estimate the proportion of smokers among What size of a sample sho...

A:

Q: NOTE: This problem has many steps. You are asked to enter intermediate values in the process. These ...

A: Given that mu = 1466, Q3 = 1668 ( 1 ) z score for 75th percentile ( 2 ) z score for 98th percentile ...

Q: Identify the number of significant digits in each of the following values, which are measured on a c...

A: a. 37.875 contains 5 significant digits. b. 38,397 does not contain any zero, hence all digits are s...

Q: Question 13 Write the number that corresponds to the correct answer. What is the treatment in this t...

A: Since, for the given information,  it needs to know if at the 5% level of significance, do these dat...

Q: 1. Samples of size n were randomly selected with replacement from populations with means and varianc...

A: 1) The mean and standard deviation are 6.9 and 2.1, respectively.

Q: 11. Find out the likely production corresponding to a rainfall of 40 cms. from the following data: R...

A: Given The data is as follows:   Rainfall (in cms.) Output (in quintals) Average 30 50 S.D 5 1...

Q: Question 7 We have learned three t tests, including all of the following except: independent-samples...

A: There are three major type of t tests, i. Independent samples t test: Independent sample t test is u...

Q: A dataset of a class contains a variable that shows the school year of a student: freshman, sophomor...

A: Step 1: Make a frequency distribution table for each class of the variable as below: Variable Fre...

Q: You are playing a card came, and the probability that you will win a game is p 0.39. %3D If you play...

A: Given,p=0.39n=833

Q: Good Quantity 2017 prices 2018 prices 2019 prices A 10 1.750 KD 2.000 KD 1.750 KD B 20 2.000 KD 2.00...

A: Price index is the ratio of cost of goods in current year and cost of goods in base year, multiplied...

Q: In a professional exam with several hundred candidates the following summary scores were reported. P...

A: We are given the following information on scores as follows : Percentile Score 10% 220 25% 24...

Q: 6.61. One-pound coffee cans are filled by a machine, sealed, and then weighed automatically. After a...

A: Given Information: Sample size n=25 Any package that weighs less than 16 oz is cut out of the convey...

Q: - The spectral density of a process {X(t)}, real or complex, is a real function of w and non negativ...

A:

Q: $ 20. Calculate the standard deviation from the following data : Size of item Frequency Size of item...

A:   size of items (x) Frequency (f) f⋅x f⋅x2 6 3 18 108 7 6 42 294 8 9 72 576 9 13 117 1053...

Q: According to American time use survey American sleep in average of 7.62 hours each day with a standa...

A: GivenMean(μ)=7.62standard deviation(σ)=2.35standard deviation(σx)=0.31

Q: Determine whether events A and B are mutually exclusive. A: Luis has a dog. B: Luis has a cat. These...

A: Given that :  There are two events are given  A : Luis  has a dog.  B : Luis  has a cat.  Now we che...