Explain what would happen to the length of the interval if the confidence level were decreased to 95%.

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A:  

Q: When a production process is operating correctly, the number of units produced per hour a normal dis...

A: a) mean of the sample mean is always equal to population mean E(x¯) = 103.

Q: Consider the following two datasets: Dataset 1                       Dataset 2 1      9             ...

A:

Q: B increases as µ approaches from µo, when Ho is false True or False

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Q: ara draws the 6 of hearts from a standard deck of 52 cards. Without replacing the first card, she th...

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Q: recent year, a sample of the South American Redeye Piranha was collected by fishermen on a particula...

A: We have given that  Sample size n =60 Sample mean =12.88 99%confidence interval. (12.09,13.67)

Q: find the values of p and q.

A: HERE GIVEN, discrete probability distribution of x and E(X) = 4

Q: percentages of teehagers In varous Counties that hav certain drugs. Complete parts (a) through (c) b...

A: Given data, X Y X*Y X*X Y*Y 23 4 92 529 16 17 3 51 289 9 40 20 800 1600 400 5 1 5 25 1 ...

Q: Evaluate each expression. Show your solution. 4. P (6, 6) = 5. P (7, r) = 840 6. 13! =

A: 4)GivenP(6,6)=

Q: A random sample of students who completed the Census at a school survey was selected. Of the 227 in ...

A: Given,n=227x=84sample proportion(p^)=xnsample proportion(p^)=84227=0.3700

Q: The following table shows the average annual income in a certain country, adjusted for inflation, fo...

A: Given that  The given problem is solved using excel regression 

Q: An individual has 30% probability of making a half-court shot independent of other shots taken. Thi...

A: Given: n =    4 p =   0.3  

Q: Enter textA certain drug is claimed to be effective in curing colds. In a n experiment on 164 people...

A: Solution is given:  

Q: Two stores sell watermelons. At the first store the melons weigh an average of 22 pounds, with a sta...

A: Given that  μ1 = 22 , ?1 = 2.5 , n1= 40 μ2 = 18 , ?2 = 2 , n2 = 34

Q: that at most 4 out of 5 selected offspring will have two recessive genes?

A: here given in dihybrid cross, an offspring has a likelihood of 0.25 to have two recessive genes here...

Q: Suppose Y1, Y2, Y3, and Y4 are mutually independent and identically distributed exponential random v...

A: Given  Yi~exp(1)   

Q: Calculate Karl Pearson's coefficient of correlation from the following data: 100 200 300 400 500 600...

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Q: A pizza parlor offers a choice of 12 different toppings. How many 6-topping pizzas are possible? (no...

A: Given,Total no.of different toppings=12

Q: In a random sample of four mobile​ devices, the mean repair cost was ​$65.00 and the standard deviat...

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Q: In a recent survey, 80% of the citizens in a community favored the building of a post office. If 15 ...

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Q: Below is a list of all possible outcomes in the experiment of rolling two die. 1, 1 1, 2 1, 3 2, 1 2...

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Q: A jar contains 10 red marbles numbered 1 to 10 and 12 blue marbles numbered 1 to 12. A marble is dra...

A: GivenA jar containsNo.of red marbles numbered 1-10 = 10No.of blue marbles numbered 1-12 = 12Total no...

Q: You are given the following data : Y 85 Arithmetic Mean Standard Deviation Correlation coefficient b...

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Q: Use the range rule of thumb to identify the values that are significantly low, the values that are s...

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Q: Applying conditional probabilities to the workplace In this unit's notes, you were introduced to the...

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Q: Town A B C D E F G Population (lakh) (X ) 11 14 14 17 17 21 25 No. of TV sets demanded ('000) (Y ) 1...

A: Given The data is as follows: Town Population (lakh) (X) No. of TV sets demanded ('000) (Y) A 1...

Q: 1. In how many ways may 4 people be seated in a row of 10 chairs? 2. In how many ways can a point gu...

A: HERE use permutation and combination 

Q: For the following data obtain (î) mean, (ii) median, (ii) mean deviation from median, and (iv) the c...

A:

Q: 12. Give the equations that represent each situation. For Independent Events: P(AN B) = P(A U B) = F...

A: Give the equations that represent each situation

Q: Given the probability mass function below. What is P(X > 4)? Sample point x 1 2 4 P(X= x) 1/9 2/9 3/...

A: Given probability mass function is sample point x 1 2 3 4 5 P(X=x) 1/9 2/9 3/9 2/9 1/9

Q: llustration The sales of a company for the last eight years are given as: Year: 1973 1974 1975 1976 ...

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Q: of humD idenuly the values that are sighilicanly low, the values that are sign aner sighiicandy A te...

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Q: Measurement error that is normally distributed with a mean of O and a standard deviation of 0.5 gram...

A: Given,Standard deviation(σ)=0.5true weight of a sample (μ) is=165.6

Q: A. Determine the sample size, given the following data: 1. s = 6, E = 0.5, confidence level= 95% %3D...

A: As per our guidelines we are suppose to answer only three sub parts. Given,s=6  ,   E=0.5α=1-0.95=0....

Q: Example 16. The class marks of a frequency distribution are 6, 10, 14, 18, 22, 26, 30. Find the clas...

A:

Q: 4. Studies show that gasoline use for compact cars sold in the United States is normally distributed...

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Q: The Table below shows the average score of the150 students sampled from the University of the East E...

A: Given data is Score(out of 100) Number of students 40 - 49 19 50 - 59 32 60 - 69 49 70 - ...

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Q: The sample size​ n, probability of success​ p, and probability of failure q are given for a binomial...

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Q: Find the mode(s) for the data items in the given frequency distribution. Score, x Frequency, f 1. 2 ...

A: Given data is  score x 1 2 3 4 5 6 7 8 Frequency F 1 2 1 5 6 2 4 5

Q: The combined math and verbal scores for females taking the SAT-I test are normally distributed with ...

A: Given that  mean of 998 and a standard deviation of 202 P(x<875 )=?

Q: Use the range rule of thumb to identify the values that are significantly low, the values that are s...

A:

Q: . Compute Standard deviation from the following data 60 Marks 10 20 30 40 50 No. of students 20 7 3....

A: Solution is given: Give data:

Q: Consider a multiple regression model XB + €, (n x 1) (n x p)(p x 1) (n x 1) where n = the number of ...

A: Note: Hi! Thank you for the question. As you have posted multiple sub-parts, according to our policy...

Q: 18. The following data pertaining to the number of members in a family. Find median of the family. N...

A: Solution is given:

Q: Question 2 of 8 The following probability mass function is for the random variable X. What is the va...

A:   X 5 6 7 8 P(X) c 2 c 3 c 4 c

Q: 2. What is the importance of getting the sample size?

A:

Q: From the following data calculate first four moments and also find the value of r, Monthly profits N...

A: