For the following two samples, calculate the corresponding z-score to test whether the two means are the same: 1. Sample 1, E(x1)=21, s1=7, n1 = 120 2. Sample 2: E(x2)=18.3, s2=11, n2=100 The Z-scores is: Answer:

Q: use of their college experiences to eir plant in New Mexico, where the ake a clay derivative for…

A: Let L and S be the number of larger and smaller tiles to manufacture respectively. Objective…

Q: A union of workers would like to estimate the mean hourly wage, the U.S. The union μ, of…

A: Given,population standard deviation(σ)=2.25margin of error(E)=0.35α=1-0.99=0.01α2=0.005Z0.005=2.576…

Q: id-aisle promotional display. To t select 20 stores from the AE storewide sales volumes. You th 1…

A: X1 X2 num Normal  End Aisle 1 22 52 2 34 71 3 52 76 4 62 54 5 30 67 6 40 83 7 64…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 8.5…

A: Let X : the lifespan X~N(μ,σ)where mean(μ) =8.5 years            s.d.(σ)=2.7 yearsand sample…

Q: 3. A medical technologist claims that 25% of the chain-smokers are teenagers. After making a survey…

A: 3)Givensample size(n)=42x=8p^=xn=842≅0.1905Confidence level=95%α=1-0.95=0.05

Q: X P(x) 0 0.15 1 0.25 2 0.2 0.4 3 Find the standard deviation of this probability distribution. Give…

A: Standard deviation(σ)=E(X2)-(E(X))2E(X2)=∑X2.P(X)E(X)=∑X.P(X)

Q: Watch your cholesterol: The mean serum cholesterol level for U.S. adults simple random sample of 106…

A: Given that Mean cholesterol=196 Standard deviation =39 Sample size(n)=106

Q: plan econd coupon payment

A: Par Value of Bond is $1000 Coupon rate is 7.5% Yield is 5% Time to maturity is 5 years Bond is sold…

Q: Example: the joint density for the random variables (X,Y), where X is the unit temperature change…

A:

Q: Based on their records, a hospital claims that the proportion, p, of full-term babies born weigh…

A:

Q: Find the indicated limit. Make sure that you have an indeterminate form before you apply l'Hôpital's…

A: Given that

Q: The scatter plot shows the number of years of experience, x, and the amount charged per hour, y, for…

A: We need to find the equation of best fit. line equation : y - y1 = [(y2-y1)/(x2-x1)](x-x1)

Q: Can the value 6 6 be a probability?

A: Solution

Q: 1) A series of experiments were conducted to determine the effect of air voids on percentage…

A: Null hypothesis: H0:µ1 = µ2 = µ3 Alternative hypothesis: H1: At least one of the means is different…

Q: It is claimed that the average life span of people in rural area is more than 64 years old with a…

A:

Q: Make a venn Diagram: In our classroom of 39 students, 11 students have a blue pen, 14 students have…

A: Total number of students = 39 No. of Students having only blue pen = 11 No. of Students having only…

Q: s of (b) and (c) are the same, which drug appears to be better? If not, explain how the discrepancy…

A: Given:   Woman Cure Rate Men Cure Rate Drug A 5 of 100 cured 5% 400 of 800 cured 50% Drug B…

Q: A Manufacturer knows that their items have a normally distributed lifespan, with a mean of 5 years,…

A:

Q: A medication states that the odds of having an allergic reaction or 2 in 200. what is a probability…

A: If m items is favourable to the event A and n of them are unfavourable to the event A. Then odds in…

Q: Estimate the average by first rounding to the nearest 100: 120, 230, 455, 175

A: From the provided information, The data values are as follow: 120, 230, 455, 175

Q: B A O 0.12 O 0.88 O 0.3 O 0.4 a b The side of this square is equal to 1. Set A is the rectangle…

A: Given:The side of this square is equal to 1. Set A is the rectangle belonging to this square, having…

Q: A college claims that the proportion, p, of students who commute more than fifteen miles to school…

A: Given: A college claims that the proportion, p, of students who commute more than fifteen miles to…

Q: he investor plans to sell the bond econd coupon payment is receive

A: Par Value of Bond is $1000 Coupon rate is 7.5% Yield is 5% Time to maturity is 5 years Bond is sold…

Q: The following data represent the results obtained from the specific gravity (S.G.) test performed in…

A: Given data: Class Frequency 2.30 - 2.39 2 2.40 - 2.49 4 2.50 - 2.59 6 2.60 - 2.69 12…

Q: Problem 0.1: A factory manufactures a specific copper part. It is found at a certain temperature the…

A:

Q: mying asia was read from a graph. The inceperiook vanissie is 50, depaation rate 13 18 43 114 260…

A: (b)   Use EXCEL to determine the regression equation.   EXCEL procedure:   Go to EXCEL Go to…

Q: Twenty male students selected at random have an average height of 180 centimeters with a standard…

A:

Q: b. Interpret the parameters of interest from the perspective of statistical  significance: (hint:…

A: Multiple Regression Simple linear regression is extended because of multiple linear regression. When…

Q: The average monthly earnings for women in managerial and professional positions is P40,000. Do men…

A:

Q: Two owners of a cattle ranch Robert and Val want to find the average weight for the ranches 200 cows…

A: Answer:   The answer is  9.80

Q: Bivariate data (4, 10), (-1, 3), (0, 2) is assumed to arise from the model Yib|xi - 3| + ei, where b…

A:

Q: Database A contains 40 data items and it's made up with an equal number of values of 0 and 100 and…

A:

Q: e investor plans to sell t ond coupon payment is

A: Given as, Par Value of Bond is $1000 Coupon rate is 7.5% Yield is 5% Time to maturity is 5 years…

Q: A population have a mean weight of 167 pounds and a standard deviation of 22.1 pounds. Find the…

A: Solution Given That,  A population have a mean weight of 167 pounds and a standard deviation of 22.1…

Q: A group of research students wants to determine whether there is a correlation between the number of…

A: Hello! As you have posted 2 different questions, we are answering the first question(question 3) .…

Q: To determine the relationship between years of education an employed for 5 years were interviewed.…

A: Sample Salary (x) Years of higher education(y) 1 21.4 4 2 18.7 4 3 27.5 5 4 42 8 5 12.6 1…

Q: A newsletter publisher believes that over 63% of their readers owns a Rolls-Royce. For marketing…

A: Given that  A newsletter publisher believes that over 63% of their readers owns a Rolls-Royce. For…

Q: A social worker reports that 30% of workers in a factory are below 15 years of age. Of the 120…

A:

Q: 1. For each day of last year, the number of vehicles passing through a certain intersection was…

A: The provided information is  µ=375 σ=25 P(X>425)=P(X-µσ>425-37525)=P(Z>2)=0.0228=2.28%

Q: Assume that when human resource managers are randomly selected, 42% say job applicants should follow…

A:

Q: Obtain the value of skewness of the variable landfill and the value of kurtosis of the variable…

A: Given:n=30Variable-LandfillMean=102.2666667Median=79Mode=30Standard…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 9.1 inches,…

A: Answer : - Given  X ~ N(μ, σ)                Where mean μ = 9.1 inches   and  standard deviation (σ)…

Q: d. -5,8,16,

A: Given: Philippines - 8,6,7,10,16 India -6,13,16,10,7 Thailand. -5,8,16,22,12 Singapore.…

Q: The investor plans to second coupon payme

A: Par Value of Bond is $1000 Coupon rate is 7.5% Yield is 5% Time to maturity is 5 years Bond is sold…

Q: It is claimed that the average life span of people in rural area is more than 64 years old with a…

A: For the given data Perform Z test for one population mean .

Q: oupon payment is received

A: Par Value of Bond is $1000 Coupon rate is 7.5% Yield is 5% Time to maturity is 5 years Bond is sold…

Q: F Paragraph S For a standard normal distribution, given: P(Z > c) = 0.1549 Find c. (round to 2…

A:

Q: 2. The test scores, of 16 students are listed below: 44, 46, 51, 57, 60, 63, 65, 70, 75, 76, 85, 87,…

A: The provided data are listed below 44,46,51,57,60,63,65,70,75,76,85,87,90,94,95,97 n=16 The fisrt…

Q: What's the interpretation for the Fstat and the pvalue? Also could you double check the description…

A: The out of the Repeated measures ANOVA

Q: To determine the relationship between years of education and salary potential, 10 persons who have…

A: Note: As per guidelines we will only answer the first three subparts, please repost other subparts…