You are conducting a study to see if the average male life expectancy is significantly less than 98. Thus you are performing a left-tailed test. Your sample data produce the test statistic z = - 2.572 Find the p-value, accurate to 4 decimal places. . p-value =

Q: According to a poll, 690 out of 1030 randomly selected adults living in a certain country felt the…

A: We have given that x = 690 n = 1030 p̂ = x/n = 690/1030 = 0.67Confidence level (c) = 95% = 0.95

Q: A particular brand of petrol was used in 85 randomly chosen cars of the same model and age. The…

A: Given: n = 85 ∑X = 1965 ∑X2 = 45959 Formula Used: Confidence Interval = X ± t*sn

Q: Find the critical value or values of y based on the given information. H₁: 08.0 n = 10 a = 0.01…

A: Given n=10 Alpha=0.01

Q: Many people believe that the average number of Facebook friends is 120. The population standard…

A: Given  Sample size n=47, sample mean x̄=145, standard deviations σ=39.2, level of significance…

Q: If you wanted to make $708 by investing $7345 for 6 years in an account that pays simple interest,…

A:

Q: Question 1 The foundation for a building is designed to rest on 100 piles based on the individual…

A: Given data: 82, 75, 95, 90, 88, 92, 78, 85, 80

Q: 1. IQ scores have a mean of 100 and a standard deviation of 16. Albert Einstein reportedly had an IQ…

A: It is given that  Mean = 100 Standard deviation = 16   Note: According to Bartleby expert…

Q: ognitive psychologist studying motivation wants to determine if type of music has any effect on the…

A:

Q: b) Suppose that a random variable X has a probability density function given as (2(ß-x) B² f(x; B) =…

A:

Q: Let X₁, X₂, X3,..., Xn denote a random sample of size n from the population distributed with the…

A:

Q: 1. A survey by the National Retail Federation found that woman spend on average R146.21 on a…

A: Given,mean(μ)=146.21standard deviation(σ)=29.44

Q: canada Youth admissions to correctional services, by age and sex 2019-2020 Age at admission 12 year…

A: Let age at admission represented by X (independent variable) and number is represented by Y…

Q: You wish to test the following claim (H) at a significance level of a = 0.002. For the context of…

A: It has been believed that the population of difference scores is normally distributed.

Q: Show that ₁ ln(X₁) is a sufficient estimator of 0. [Hint: Use one-parameter regular exponential…

A: It is given that  X has the following pdf  f(x) = (θ + 1).xθ , 0 < x < 1

Q: Let 3, 1, 3, 0, 3, 2, 2, 0, 1, 2 be ten independent observations from a binomial experiment of four…

A: X~Bin(n=4, β)

Q: Calculate the approximate quantity relatives to two decimal places for the MTN and Cell C stocks…

A:

Q: 1.3 canada Youth admissions to correctional services, by age and sex 2019-2020 Age at admission 12…

A: Age of admission is independent variable X and number is dependent variable Y. The regression line…

Q: The probability that more than 159 people voted for the referendum is ___. (Round to four decimal…

A: From given data we have ; The sample size is n=300. The number of subjects is X=159. p^=159300=0.53

Q: The heights of American adult males are normally distributed with a mean of 177 cm and a standard…

A: Given that: Population mean, μ=177 Population standard deviation, σ=7.4

Q: A store manager gathers some demographic information from the store's customers. The following chart…

A: Given:   Age Number of customers 20 61 20-29 86 30-39 90 40-49 73 50-59 78 60 84

Q: i) Show that the standard score of the sample mean X, is equal to Y. ii) Show that the mean and…

A: It is given that  X follows N(θ, 1), then E(X) = θ and V(X) = 1, And the moment genarating function…

Q: a) measures of central tendencies (mean, median and mode); b) measures of dispersion (standard…

A: Given data: Age (x) Frequency (f) 12 6 13 62 14 194 15 343 16 492 17 548 18 83

Q: Problem 1) The cumulative distribution function of random variable X is: 0 x 1/2]. b) Find P[-1/2 <…

A: Note: According to Bartleby guidelines expert solve only one question and maximum three subpart of…

Q: ) Let X₁, X₂,..., X and Y₁, Y₂, ..., Ym be random samples from populations with moment generating 25…

A:

Q: Find the percentage of women who spend less than R190.00 on a Saturday lunch

A: It is given that  X : women spend follows N(mean = 146.21, SD = 29.44), then Z = (X - mean)/SD…

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 17 for the population…

A: given data,μ=100σ=17normal distribution CI=0.90n=?

Q: O ANOVA Compare anxiety across 3 time-points. Assume a within subjects design. Calculate F values 1…

A: Here the number of groups are k= 3 and total number of values are 4*3• 12

Q: d) A South African manufacturer of BMW cars offers a model in one of three colors: Blue, Red, or…

A:

Q: According to the Internal Revenue Service, the average length of time for an individual to complete…

A: Here, average is 10.53, standard deviation is 2.5 and n = 81.

Q: A population of values has a normal distribution with μ = 109.1 and o = 70.6. You intend to draw a…

A: given data, normal distributionμ=109.1σ=70.6n=69we have to find out the given probability for thr…

Q: K (a) Identify the shape of the distribution, and (b) determine the five-number summary. Assume that…

A: Note  1. Skewed distribution has large tails either top or bottom sides. 2. Symmetric distribution…

Q: Use the regression equation to predict the value of y for x = -0.2. Assume that the variables x and…

A: Solution:  x y (x-x) (y-y) (x-x)(y-y) (x-x)2 -5 11 -4.5 9.3 -41.85 20.25 -3 6 -2.5 4.3…

Q: . A survey by the National Retail Federation found that women spend on average R146.on a Saturday…

A: given data normal distributionμ = 146σ = 29.44P(x&lt;190)= ?

Q: Let X₁, X2, X3, ..., Xn denote a random sample of size n from the population distributed with the…

A:

Q: 1) 1) Use part d) of question 2 to show that is a consistent estimator of 8. Show that In(X) is a…

A: Note: According to Bartleby guidelines expert solve only one question and maximum three subpart of…

Q: a) Let X₁, X2, X3,..., X be a random sample of size n from population X. Suppose that X~N(0, 1) and…

A: Given  X~N(θ, 1)

Q: You intend to conduct an ANOVA with 5 groups in which each group will have the same number of…

A:

Q: Calculate approximately to 3 decimal places the composite price index for all three stock between…

A: Consider the following table: Stock Price p0 Qty q0 Price p1 Qty q1 p0q0 p0q1 p1q0…

Q: A data set includes 106 body temperatures of healthy adult humans having a mean of 98.9°F and a…

A: Solution: Given information: n=106 Sample size x=98.9 Sample mean s=0.63 Sample standard deviation

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 17 for the population…

A: Given,margin of error(E)=4population standard deviation(σ)=17α=1-0.90=0.1α2=0.05Z0.05=1.645

Q: Find the standard deviation, σ, for the binomial distribution which has the stated values of n and…

A:

Q: i) Find the sampling distribution of the statistic W = X₁ + 2X₂ −X3 + X4+X5- ii) What is the value…

A:

Q: The data table contains waiting times of customers at a​ bank, where customers enter a single…

A: The data shows the waiting times of customers at a​ bank.

Q: QUESTION 4 a) Let 3, 1,3,0,3,2,2,0, 1, 2 be ten independent observations from a binomial experiment…

A: X~Bin(n=4,β) Sample size=10

Q: 2.5.5. Find the probability of the union of the events a < X₁ <b, -∞0 < X₂ <∞0, and -∞ < X₁ <∞, c<…

A:

Q: An experiment was conducted to evaluate the number of stems per hectare of a pine variety (Pinus…

A: The variance values for location A and location B are 125.3 and 127.2, respectively.

Q: Determine where a family would go on vacation, if the choices are Bermuda, Mexico, and Canada, based…

A: The preference for the places are given as: No. of voters 94 61 87 72 79 74 1st preference B B…

Q: Let X₁, X2, ..., X and Y₁, Y₂, ..., Ym be random samples from populations with moment generating 25…

A: Given X1, X2, . . ., Xn and Y1, Y2, . . ., Ym be random samples from populations with moment…

Q: The data in Figure 2 below has to do with the stocks of three of South Africa's biggest mobile…

A: Solution: From the given information,

Q: Youth admissions to correctional services, by age and sex 2019-2020 Age at admission 12 year old 13…

A: Given data: Age (x) number of admissions (y) 12 6 13 62 14 194 15 343 16 492 17 548…