From the data given below find the cost of living index number for 1998. Per cent of total Items Price in 1997 Price in 1998 expenditure 45 Food Fuel Housing Clothing Miscellaneous 160 140 30 25 15 80 70 20 40. 35 12 50 40 8

Q: The sugar content of the syrup in canned peaches is normally distributed, and the variance is though...

A:

Q: b. Let U and W be mutually exclusive events where P(U) = 0.32 and P(W) = 0.45. Find each of the foll...

A: here use venn diagram and probability rule

Q: Chips Ahoy! 1,000 Chips Challenge.” As reported by B. Warner and J. Rutledge in the paper “Checking ...

A: Solution: Given information: n= 42 Sample size  x= 1261.6 Sample mean s= 117.6 Sample standard devia...

Q: The patient recovery time from a particular surgical procedure is normally distributed with a mean o...

A:

Q: 7) In a sample of 50 business trips taken by employees in the HR department, a company finds that th...

A: Hypothesis Testing Hypothesis testing is a statistical method that uses the sample data to evaluate...

Q: Prior to a set of compensation policy changes at a company 30% of the employees surveyed said that t...

A:

Q: A large airline company called Fusion Fly monitors customer satisfaction by asking customers to rate...

A: The mean is 3.38 and the standard deviation is 1.76.

Q: Solve the following items. 1. The weight of goats at a farm is normally distributed with a mean of 6...

A: 1) Mean = 60 kg , SD = 10 kg      Weight on truck = 650 kg , Number of goats = 10      Total weight ...

Q: Туре: ii) Proportional Allocation - this is used when the samples you want to obtain from the sample...

A: From the given information about the various population proportions for different stratum, the sampl...

Q: 3. The following table gives home values of 10 homes in three neighborhoods: Neighborhood A $800,000...

A: Given information: Consider the table that gives the home values of 10 homes. Neighborhood A Neig...

Q: Do you need to prove normality for chi-square on spss?

A: Chi-square Test : The chi-square test is a hypothesis test used to determine whether there is a stat...

Q: A normal population has mean u = 55 and standard deviation o = 9. What is the 84th percentile of the...

A: Given that mean u = 55 and standard deviation o = 9.

Q: Supp_ose that, in a cert_ain sta_ge, only 60% of_ all dri_vers  re_gula_rly we_ar a seat_be-lt whi_l...

A: Given that  n=600 , p=60%=0.60  , q=1-p=1-0.60=40 Find approximate P(X>375)  

Q: Once we have a x value we need to determine if it is statistically significant. This is accomplished...

A: Let 'A' represents the variable from group 1 Let 'B' represents the variable from group 2 The follow...

Q: There are numbers from 1-200. Four random numbers are picked, whats the probability that the four nu...

A: Given that, there are numbers from 1 to 200. Four random numbers are picked. We need to find the pro...

Q: An economist would like to estimate the average household income in Martin county. The mean househol...

A: We have given that,  Sample mean (x̄) = $ 52590, population standard deviation (σ ) = $ 864 and samp...

Q: 2. Verify that the requirements for constructing a confidence interval for the proportion are satisf...

A: To construct the confidence interval for the proportion the following conditions would be met. 1. Sa...

Q: Match the histograms on the right to the summary statistics given. Standard Mean Median Deviation 53...

A: Histogram : A bar graph may be a graphical illustration that divides a group of information points i...

Q: box contains 5 ide_ntical batter_ies. Among, 2 of th_em are “new” and work _properly, whe_reas the o...

A: Let the random variable X denotes the number of batteries needed to be tested. There are 5 batteries...

Q: many water specimens are required in the sample?

A: Here use basic of confidence internet and margin of error

Q: a certain presidential election, Alaska's 40 election districts averaged 1,958.8 votes per district ...

A: Let X = Number of votes for the candidate for an election district.  X~N(μ=1958.8, σ=572.5)

Q: Instructions: Submit your solution in pdf format. Strictly one problem per page. 1. Solve for y3 usi...

A:

Q: An investment company offers its members a number of different payment options. For a randomly selec...

A: Given that  The Cumulative distribution function of X is  F(x) = 0, if x<1 0.4, if 1<=x<=3 ...

Q: What is the expected number of “4” obtained? What is the standard deviation of the number of “2” obt...

A:

Q: A marine biologist would like to estimate the mean lifespan of all Florida manatees. The mean lifesp...

A: Given that  Sample size n =37 Sample mean =47 Population standard deviation =9.8 NOTE:- According to...

Q: In a one-tailed test, in which critical values below will the computed z of 2.312 falls in the non-r...

A: Solution-: Given: zstat=z=2.312 We find which critical values below will the computed z of 2.312 fal...

Q: 14. A researcher obtains a t = 2.25 for a repeated-measures study using a sample of n = 15 participa...

A: It is given that Test statistic t = 2.25 Sample size n = 15

Q: The body needs vitamin D in order to use calcium. An experiment is designed to study the effects of ...

A: Anova is used to meausre the mean significance between more than three variable. Factorial design ar...

Q: The formula A= 265e0039t models the population of a particular city, in thousands, t years after 199...

A:

Q: prob

A: Here use exponential distribution 

Q: A normal population has mean u = 10 and standard deviation o =7. (a) What proportion of the populati...

A:

Q: Suppose that a biased coin is tossed 50 times. In each flip, the probability of getting head is 3/8....

A: Let X be the random variable from binomial distribution with probability of getting head  (p)= 3/8 a...

Q: The systolic blood pressure (given in millimeters) of males has an approximately normal distribution...

A: We have given that Mean(µ) = 135Standard deviations (σ) = 18

Q: For a hypothesis test of a single population mean with known population standard deviation (0), we c...

A:

Q: When ordering the Kids' Lunch at Burger Universe, the customer must choose a size, a type of bun, a ...

A: The number of possible combinations of launches is to be calculated for the given types of sizes, bu...

Q: A sample of n=25 individuals is randomly selected from a population with a mean of p=65, and a treat...

A: Given data  n = 25 mu  = 65 S = 20 Sample mean  = 70 Two tailed test alpha = 0.05

Q: Supp_ose that, in a cert_ain sta_ge, only 60% of_ all dri_vers re_gula_rly we_ar a seat_be-lt whi_l...

A:

Q: Suppose a random sample of 100 individuals is taken and that average wage for that sample is $870 pe...

A: It is given that the mean is 870 and the population standard deviation is 300.

Q: A random sample X1,X2.Xn comes from a population about which you know, essentially, nothing. If n 25...

A: Given that the random sample X1, X2, …,Xn of size n≥50 is taken from population.

Q: Most exhibition shows open in the morning and close in the late evening. A study of Saturday arrival...

A:

Q: Is the following considered a probability distribution? -1 1 P(x) 0.50 0.30 0.20 Ο Νο. Σp (π) 41 O Y...

A:

Q: Three brands of reducing pill were tried on a sample of 8 female adults. The data are given on the t...

A:

Q: An unreplicated 2^3 factorial design has 4 center runs the observations at the design center are 30,...

A: Given observations are:  Xi= 30,32,38, 28 The pure-error sum of squares is the sum of squared deviat...

Q: Suppose that, for a certain mathematics class, the scores are normally distributed with a mean of 75...

A: Mean=75 Standard deviation=9 X  is a normally distributed random variable of marks of students in ma...

Q: The record of 35 randomly selected participants of a marathon was selected. The mean time it takes f...

A:

Q: a. What is the distribution of U = Y?? Explain using the concepts discussed in class. b. What is the...

A:

Q: 2. Use the Venn diagram below to detemine the following probabilities.

A: here use basic probability rule and venn diagram

Q: You measure 26 randomly selected textbooks' weights, and find they have a mean weight of 69 ounces. ...

A: Given that  x̄ = 69 , ? = 13.4 , n =26

Q: You work for a marketing firm that has a large client in the automobile industry. You have been aske...

A: From the provided information, Confidence level = 95% Margin of error = 0.025

Q: Question 1b The St. Lucian Government is interested in predicting the number of weekly riders on the...

A: Given Information: Consider the given data: Number of weekly riders (y) Price per week  The popul...