Using the given spreadsheet as a basis, discuss the relevance of statistical data in decision making.

Q: State the appropriate null and alternative hypotheses. Ho: P 0.40 Ha: P = 0.40 Ho: P = 0.40 Ha: p >…

A: It is given that  Population proportion, p = 40% = 0.40 Favourable cases, X = 82 Sample size, n =…

Q: Let XX.....X 2 distribution with density function f(x;0) be a random sample from a n -fa. = - 1…

A:

Q: (d) What is the 95% confidence interval for the difference between the two population means? (Use…

A: Given that  Sample sizes n1=20      , n2=30        Sample means X̄1=22.9     , X̄2=20.1       s1…

Q: For a chi-square distribution with n d.f. establish the following recurrence relation between the…

A:

Q: calculate the following class frequency 500-750 15  750-1000 23 1000-1250 55 1250-1500 92 1500-1750…

A: Class Frequency (f) Mid value (x) f⋅x f⋅x^2=(f⋅x)×(x) 500-750 15 625 9375 5859375 750-1000 23…

Q: distribution. Calculate the following probabilities using the ALEKS calculator. Round your responses…

A: Given that  A) P(Z > 1.69) = ? B) P(Z ≤ −2.09) = ? C) P(0.78 < Z < 2.04) = ?

Q: If X, Y are standardized random variables and 1+ 2ab a² + b² find r(X, Y), the coefficient of…

A:

Q: function f(x)=B³ Find the Maximum Likelihood Estimator of B. 00 elsewhere

A: Solution

Q: A random variable X has probability density function Oe , X>0 0, elsewhere It is desired to test the…

A:

Q: a) Let X₁, X₂, X, denote a random sample from N (0,02) distribution with probability density…

A: X~N(0, standard deviations σ2)

Q: An airliner carries 100 passengers and has doors with a height of 78 in. Heights of men are normally…

A: a. Suppose a random variable x defines the height of men.

Q: he point estimate of the population proportion is

A: From given data we have : Lower bound=0.517​, upper bound=0.813​, n=1000

Q: EOPLING GAT MORE credit card purchases of 100 customers randomly chosen from a segment of a major…

A: The data shows the last month's credit card purchases of 100 customers.

Q: Because this is a serious claim, we will use a stricter cutoff value for unusual events. We will use…

A:

Q: The values of f(x) are given at a, b and c. Show that (under certain conditions to be mentioned) the…

A:

Q: Let X ,X ₁ X 2 , . . . , X ₁₁ X be a random sample from an n exponential distribution with density…

A: Pivotal quantity is the quantity which one is independent of parameter.

Q: Suppose the following data represent the ratings (on a scale from 1 to 5) for a certain smart phone…

A: Given:

Q: The student council is required to have 6 members. Two should be seniors and the other 4 should be…

A:

Q: 19. Kia owns 3 backpacks, 4 hats, and 2 jackets. What is the probability that he selects one…

A: 3 -  back packs 4 - hats 2 - jackets ___________________ 9  - total clothes p(select one back pack…

Q: The average percent of correct responses on the midterm last semester was 78% with a standard…

A:

Q: Show that for n attributes A₁, A2, A3, ..., An (A₁ A₂ A3... A) ≥ (A₂) + (A₂) + (A3) + ... +…

A:

Q: Suppose Z follows the standard normal distribution. Calculate the following probabilities using the…

A: Suppose Z follows the standard normal distribution. Calculate the following probabilities using the…

Q: An aptitude test is designed to measure leadership abilities of the test subjects. Suppose that the…

A:

Q: Complete parts (a) through (d) below. a. At the 0.05 level of significance, is there evidence that…

A: It is given that  Population proportion, π = 20.4% = 0.204 Sample size, n = 100 Favourable cases, X…

Q: The scores of 15 students in a math test are given below: 43 37 59 71 56 62 45 65 51 50 32 58 45 62…

A: Given that data 43 37 59 71 56 62 45 65 51 50 32 58 45 62 76

Q: Conduct the hypothesis test and provide the test statistic and the critical value, and state the…

A: For the given data Perform chi square goodness of fit

Q: A magazine publishes restaurant ratings for various locations around the world. The magazine rates…

A: Given information- We have given that the magazine rates the restaurants for food, decor, service,…

Q: Kelly’s batting average is .30 (they hit 3 out of every 10 pitches). Let’s assume there are 120…

A:

Q: Listed below are the amounts of time​ (in months) that the employees of a restaurant have been…

A: Given that data  1, 5, 6, 8, 11, 14, 17, 46, 61, 90, 99, 126, 143, 167

Q: If ß1 = 1 and ẞ2 = 4 and variance 16 Find the values of µ3 and u4 and comment on the nature of the…

A: Answer: From the given data, β1 = 1 and β2= 4 Variance = 16 = μ2 Because the second moment is the…

Q: Draw a graph of a normal distribution with mean μ = −4 and standard deviation σ = 2. What's the…

A: Given that  Mean = μ = −4 and standard deviation σ = 2.

Q: The desired percentage of SiO₂ in a certain type of aluminous cement is 5.5. To test whether the…

A:

Q: Among 29- to 34-year-olds, 28% say they have called a talk show while under the influence of…

A: given datap(say they have called talk show) = p = 0.28n = 7 selectedx = No. of people have called a…

Q: Pairs of P-values and significance levels, a, are given. For each pair, state whether the observed…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted. We…

Q: a. Given the following Information obtained from three normally distributed populations, construct…

A: Given information: SSTR=173.9SSE=2616.8c=3n1=n2=n3=6p-value=0.617Level of significance (α)=0.10…

Q: Assume that military aircraft use ejection seats designed for men weighing between 140.6 lb and 217…

A: Given mean of 177.1 lb standard deviation of 49.4 ​lb

Q: Z= 123 - 105 / 15  Second Part is a fraction. This is statistics to find the normal curve, please…

A:

Q: Suppose that the results of a survey show that 51% of people consider summer as their favorite…

A: From the provided information, Proportion (p̂) = 0.51 Margin of error (E) = 0.04

Q: Use the table below to find the regression coefficients for b_0 and b_1. Explain what b_0 and b_1…

A:

Q: scores of 40 students are listed below. Find P85.   30 35 43 44 47 48 54 55 56 57     59 62 63 65 66…

A: Given that  Arranging Observations in the ascending order, We get…

Q: 15. A booth at the fair offers a game of chance where a person spins a wheel divided into four equal…

A: given datap(north)=p(east)=p(south)=p(west)=14=0.25west : win $ 20north : pay $ 8south : pay $ 5east…

Q: Can Y = 5 + 2.8 X and X = 3 -0.5Y be the estimated regresswion equations of Y on X and X on Y,…

A: Answer...

Q: d. The cardio was for a medium or long time. e. The cardio was for a short time or a bike ride. f.…

A: walk skate bike total short 8 3 22 33 medium 7 15 18 40 long 2 4 9 15 total 17 22 49 88

Q: Data on alcohol content and wine quality was collected from variants of a particular wine. From a…

A: From the given information, X be the Alcohol content and y be the wine quality. The sample of 30…

Q: A company that bakes chocolate chip cookies averages 5.2 chocolate chips per cookie. Assume that the…

A: Given   Average=5.2

Q: An e-commerce Web site claims that 8% of people who visit the site make a purchase. Complete parts a…

A: Here, given 8% people make purchase, 0.08. And 92 % people do not purchase and number of people is…

Q: In general after group makes a reservation in a restaurant they do not show up 20% of the time. If a…

A: Givenp=0.20sample size(n)=6Let "x" be the no.of restaurant donot show…

Q: At a company that sold tables, a customer could choose from 3 types of wood, 4 styles, and 2…

A: There are 3 types of wood, 4 styles, and 2 heights of tables in a company.

Q: In the following probability distribution, the random variable x represents the number of activities…

A: c) The random variable x defines the number of activities a parent involved in.

Q: Hypothesis: H0: Ud is greater than or equal to 0 Ha: Ud is less than 0 Decide if we reject H0 or…

A: From above output Lower 95% =-26.462  Upper 95% =-0.871