I am having trouble understanding z-score. Ex: I am given z.1/2 = z.05 how do I find the z value and look it up in the z table? In class, it was 1.645 I just don't understand how they got that. I put a table with this question, can you draw how you used it?

Q: Where do you get 0.9049 or it should be 0.4049 according to z table?

A: Given that, μ=43 yearsσ=5yearsn=30 The probability that the average age of the group is greater than…

Q: Why did you say p = 1-0.75 rather than p =0.75?

A: Given that, according to a survey taken by an agency in a rural area, it has been observed that 75%…

Q: 3. Find the value of x. x+3 12 X = type your answer...

A: Given query is to find the value of x.

Q: a

A: The given triangle is:

Q: Given P(E or F) = 0.72, P(F) = 0.43, and P(E and F) = 0.09, what is P(E)?

A: Given P(E or F) = 0.72, P(F) = 0.43, and P(E and F) = 0.09

Q: Given P(E or F) = 0.59, P(E) = 0.14, and P(E and F) = 0.03, what is P(F)?   Your Answer:

A:

Q: Find the value of (3/2). 4

A:

Q: what is the P(A or B):

A: Given: We have given the probability of two events A and B. P(A)=0.3  and P(B)=0.2 To find P(A or…

Q: Given P(E or F) = 0.72, P(E) = 0.22, and P(E and F) = 0.04, what is P(F)?

A: Here we need to find P(F).

Q: Matching Here are several scatterplots. The calculatedcorrelations are -0.923, -0.487, 0.006, and…

A: The scatter plots gives the graph of the two variables from which one can depict the relationship…

Q: Which variable is the independent variable (the X variable)? Which variable is the dependent…

A: Solution Given. R square = 0.5808 Coefficient of determination = 0.5808 So amount of explained…

Q: Given P(E or F) = 0.66, P(E) = 0.26, and P(E and F) = 0.07, what is P(F)?

A:

Q: Use the diagram to find the missing measure. mWX Y W 75% 110°

A: From, the given figure, it can be concluded that: mXY⏜=110∘mWY⏜=75∘

Q: Given the following: P(A) = 0.22, P(B) = 0.46, with A and B independent. Find: P(A or B) 0.5788…

A: P(A)=0.22P(B)=0.46A and B are independent soP(A and B)=P(A)*P(B)

Q: What is 1)" for the following values? 3n (a) n = 1 (b) n = 2 (c) n = 3

A: Given that, The function is, (-1)n3n we have to find the value of given function at n = 1, n = 2, n…

Q: Cynthia and her father planted a tree in their front yard 8 years ago. The tree was 2 meters in…

A:

Q: how did you find the mean? why is it 72.5

A: Given data :  The observation in increasing order is 30, 40, 50, 50,50, 55, 55, 55, 60, 65, 70, 70,…

Q: Given P(A or B)=0.21, P(A)=0.43, P(B)=.005 What is B

A: The general formula of probability is given by, (P(A or B)=P(A)+P(B)-P(A and B) For this case,…

Q: If n(A) = 14, n(B) = 6, and n(A U B) = 14, what do you know about n(A N B)? %3D n(A n B) = (Simplify…

A:

Q: supposed to find the geometric mean of 14 and 6. I got 9.165..., but my teacher said it should be…

A: The given question is taken from the sequence and series in which we have to find the geometric mean…

Q: 44. What is the value of E(X + 3)² for the scores: 1, 5, 7, 11?

A: Given score is 1, 5, 7, 11

Q: How is math connected to people and surroundings?

A: You go to the market and buy something. Now you have to pay for that. So you have to calculate how…

Q: 4. Given the diagram below. Philip thinks the value of x is 9, but Mia thinks the value 2 2.5 of x…

A:

Q: Given P(E) = 0.49, P(F) = 0.27, and P(E and F) = 0.04, what is P(E or F)

A: According to the given information, we have P(E)=0.49P(F)=0.27P(E and F) = 0.04

Q: 39. What is the value of (EX)² for the scores: -1, 0, 3, 5?

A: Given that  The data are -1,0,3,5 Find the value (∑X)2

Q: Given P(E or F) = 0.18, P(E) = 0.40, and P(F) = 0.46, what is P(E and F)?

A: Solution-: Given: P(E or F)=0.18, P(E)= 0.40, P(F)=0.46  We want to find P(E and F)=?

Q: Round your answer to the nearest tenth. 9.2 16.5

A:

Q: where did you get  0.0649 from? on the problem

A: To find the 90% confidence interval for the difference in proportions between responses generated by…

Q: The graph shown below represents how the 2011 graduates of law school are doing compared to the 2007…

A: In this question, we will be discussing the percentage of those not working who have graduated in…

Q: nd alternative hypotheses? versus H,: ecimals. Do not round.) two decimal places as needed.)

A: We are given: p0=53%=0.53 First, we calculate np0(1-p0) to check the conditions. The calculations…

Q: Which best represents y x-1? y 3 2 6. 4

A:

Q: 1. What is the value of the expression shown 24 +0.2 12 (B) 24 A 477 C48 B 106 below? 2. What is the…

A: We have find solutions for given problems.

Q: eristics 0.58, P(B) = 0.46,

A: Given THAT, 1) P(A)=0.58 2)

Q: how do you find the end behaviors ? our teacher says it's easier to use the chart

A: (c) The given graph is graph of a 5 degree polynomial. Observe the end behaviors of the graph as…

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: f you know the value of t, would the evaluated expression be different if you added the known value…

A: Let t=2  Then,

Q: 15 csc(B) = If %3D 2, what is the value of Csc(-B)? csc(-8) = %3D

A:

Q: If P(A) = 0.4, P(A| B) = 0.4, P(B) = 0.69, then P(B | A) = 0.58 0.69 O We need more information to…

A: Answer - If  P(A) = 0.4,  P(A/B) = 0.4,   P(B) = 0.69, then  Find P(B/A)  = ?

Q: P(Z = 0.76) %3D O 0.71 0.22 J0.29 O 0.78

A: Note that Z (standard Normal) is  a continuous random variable.