Compute the indicated quantity.  P(A)= .3, P(B)= .4. A and B are independent. Find P(A n B)

Q: An xbar chart is to be established based on x-doublebar=100 and sbar=8 with n=4. The control limits…

A: Given that, X-double bar=100 , s bar=8 n=4, α=0.0035 α2=0.00352=0.00175 z(α/2)=z(0.00175)=2.92…

Q: 1. Jennie got a score of 55 which is equivalent to 7th decile in a mathematics te Which of the…

A: I have answered all the questions

Q: Budoor is doing a biological research and she is testing a tablet by giving that to the monkeys…

A:

Q: data preparation

A: True

Q: 2. value of E Cx-)? for What is the Scores 2,2. 14!

A: Given  2,2,1,4

Q: 31. How many t-tests would a researcher use if s/he wants to compare 4 (four) experimental…

A: # How many t- test  will be used by researchers to compare 4 experimental conditions ??

Q: Fill in the blank: In a test of Ho: µ 2 10 versus H¡: µ < 10, the sample mean was X the P-value was…

A: P-value: If the null hypothesis is true, the probability that obtaining the test statistic is…

Q: A professor gives A's to students with z-scores of +1.50 or higher. a. What proportion of a class…

A: The distribution of proportion should be normally distributed. z-score = 1.5

Q: A survey of 100 fatal accidents showed that 17 were alcohol related. Find a point estimate for p,…

A: Given ,   n = 100  x = 17

Q: A Grade of B: To get a grade of B, a student must have a mean average of 80 or greater. Jim Condor…

A: Given that

Q: Compute the indicated quantity. P(A | B) = 0.3, P(B) = 0.8. Find P(A n B). P(A n B) =

A: Using conditional probability we get:P(A|B)=0.3P(A∩B)P(B)=0.3P(A∩B)=0.3P(B)P(A∩B)=0.3×0.8 [given…

Q: hat is the probat 2. In the question above, you should have calculated a z score. Why isn't the z…

A:

Q: Classify the statement below that is either descriptive statistics or statistical inference i.…

A: Descriptive statistics are used to summarize the data like Mean, Median or mode of the data, spread…

Q: a sample of n=7 scores has the mean of M=16. One score in the population is changed from X=20 to…

A: The mean is 16 and the sample size n is 7.

Q: 43. What is the value of E(X - 2) for the scores: 1, 2, -2, 4, 5?

A: Here given that: Score( x) : 1, 2, -2, 4, 5 Make a table of x and (x - 2)  Then sum the column (x -…

Q: J (2) 0, oth Find the mean and variance of X.

A:

Q: P(1.10 s z) P(IZ| s 2.50)

A: Here use normal distribution table for probability from z score

Q: 2. The histogram below shows the amount of time visitors to a museum spent browsing an exhibit on a…

A: There were total 300 visitors.

Q: Compute the indicated quantity. P(B) = 0.5, P(A n B) = 0.2. Find P(A|B). P(A|B) :

A:

Q: 2. A recent report on elementary schools in Kent county claimed that 13% of elementary students…

A: Let p be the population proportion  X=number of people typically walk to a school  n=random sample…

Q: You think your car’s fuel efficiency is much lower than it should be. The average fuel efficiency of…

A:

Q: sample of 25 students who score a mean of 53. a. Shine claims that these students don't have very…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: f n=7 scores has a mean of u=13. What is the value of EX

A: The formula of the mean is: Meanμ = ΣX N

Q: Compute the indicated quantity. P(A | B) = 0.3, P(B) = 0.7. Find P(A N B). P(A N B) =|

A:

Q: Find the P value in a test of the claim that a population proportion is not equal to 0.73, given…

A: Givenclaim thatpopualation proprotion is not equal to 0.73i.e., p≠0.73The test is two tailed…

Q: g. P(z<zo) = 0.5 h. P(zszo) = 0.0091

A: Given:  z be the standard normal variate N(0,1)  to find value of Z0  g): p(Z&lt;Z0)=0.5  h):…

Q: A survey of 120 men found that 72 gamble. Another survey of 100 women found that 52 gamble. (a) Test…

A: a)   Denote p1, p2 as the true population proportions of men and women, who gamble, respectively.

Q: a. What percent of people waited less than 15 min. b. What percent of people waited less than 20…

A: Hi, we are supposed to answer three subparts at a time. Since you have not mentioned which subpart…

Q: 6. Place the following values in order from least (on top) to greatest (on bottom). V15 3.2 3.16 V49…

A:

Q: Compute the indicated quantity. P(B) = 0.5, P(A n B) = 0.2. Find P(A|B). P(A|B) ▪

A: P(B) = 0.5 P(A∩B)=0.2

Q: You are thinking of moving to either Des Moines, Iowa or San Francisco, California. A friend claims…

A: 1) From the given output, the test statistic is 0.162 and the p-value is 0.873.

Q: 45. What is the value of E(X² + 2) for the scores: 3, 4, 7, 8?

A: Given that  The data are 3,4,7,8 the value of ∑(X2+2)

Q: Dr. Stoney has administered a test to his students. He calculated a x̄= 86 and ?? = 12. a. What is…

A: It is given that the mean is 86 and the standard deviation is 12.

Q: grade, eported regularly IkIng coffee. By the time they reach 12th grade, 20 of the 6th grade coffee…

A: given A= coffee drinker=100 B=not drink coffee  = 400 out of A set of kids do juggling = 20…

Q: Say you get a z-score of z = 0.35. Find 2 * Pr(Z ≥ |z|)

A: We will use Std. Normal table to find the required probability.

Q: Scores on a test have a mean of 66 and a standard diviation of 9. Michelle has a score of 57.…

A: Given,          Mean μ=66          Standard deviationσ=9          Michelle has a score X=57

Q: er the age of 18 who eat dinner toget than the level of significance. Theref an the level of…

A: Given data number of success , x= 515.0 sample size, n = 1172 population…

Q: 4. Test the claim that the proportion of college students taking Math 13 is the same as it was 10…

A: Given Data

Q: person waited before being served was noted and the results are shown in the charts below.  How…

A: Given that:

Q: X = 80, Me = 70, Lower Quartile (Qı) = 20, Upper quartile (Q3) = 100 and S.D From the data given…

A:

Q: μ =67 x̅ =66 s =2 and  n=25 find the test statistic ? t = ?

A:

Q: A financial analyst of Woolworths is interested in the average number of months that it takes…

A: There are two possibilities because from the question it is not clear that is it Z - test or T-…

Q: Compute the indicated quantity. P(A | B) = 0.3, P(B) = 0.6. Find P(A n B). P(A n B)

A: P(A|B) = 0.3 P(B) = 0.6

Q: Events X and Y are such that P(x)= 0.35 and P(x ∪ y) = 0.80. Given that X and Y are independent and…

A: From the provided information, P (x) = 0.35, P (x Ս y) = 0.80 The events X and Y are independent and…

Q: 2.4 2.6 2.8 3.2 h(q) 1854 2821 4294 6535 9946 Estimate h'(2.8) using the table above. h'(2.8) s

A:

Q: 3) Find the miss.ng Side Round rb the near est tenth, a.14.2 b.)13.2 c)マ. 34 12 al 20.4

A:

Q: The test statistic is x = 18.70 The critical value is X3.03,df 12.37 The p-value for the test is…

A: It is given that  The test statistic is  χ20 = 18.70 Critical value is χ20.03,df = 12.37

Q: ACT scores range from 1 to 36 and are normally distributed where N (21.5, 5.4). SAT scores• range…

A: The z score indicates how many standard deviations that a data points away from the mean. It can be…

Q: d. Which score appears most often? e. There are only two values between 75 and 95 for which no one…

A: d. It can be observed that the score 90 appears 5 times. Thus, the score appears most often is 90.

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.