Question 17 The random variable X represents the number of credit cards that adults have along with the corresponding probabilities. Find the expected value (mean) of X. X 0 1 2 3 4 O 1.00 2.93 O 2.41 O 1.23 File P(X) 0.11 0.12 0.23 0.33 0.21

Q: Solution: Step 1: State the hypotheses. Step 2:The level of significance and the critical region.…

A: Given : Data  : First we need to calculate the mean and standard deviation for both the samples For…

Q: t-tests are widely used in public health research. Please list one scenario that two-sample t-test…

A: The t-test is a statistical technique for making a comparison between the means of two groups. It is…

Q: + -3 -2 4 3 2 -2 2 (3.8, 0) 3 4 5 LO

A: 1. Center (0,0)Vertices  (0,1) and (0,−1)Foci  (0,5386​​)and(0,−5386​​)            or…

Q: -7 (5x+2) - 7(2 — 10x) = 423 83.80 O 6.44 11.29 O 12.89

A:

Q: Three co-Workers Pecorded the amount of water in a fish tank being replaced at regular intervals. •…

A: 6/5 of an hour means 6/5 of 60 minutes  Ie 72 minutes .  Now Christie measured 3/4 Gallon in 72…

Q: -4 3 -4 4 A = 2 1 and B= -2 [3 -4 2 4 1

A:

Q: 1+3+5+7...+1003

A: Sum of n odd numbers, where the last term of the series is (2n – 1), is, Sn = 1 + 3 + 5 + …. + (2n –…

Q: -7.4v+2.4(-7.1v+-10)+6.7

A: simplified value is -24.44 v - 17.3

Q: A biologist recorded a count of 360 bacteria present in a culture after 5 minutes and 1300 bacteria…

A:

Q: B is the wrong option

A: Simple linear regressions can be carried out, as they have been done previously for other sources,…

Q: 5. A thermometer is removed from a room where the air temperature is 20°C and is taken outside where…

A:

Q: Please do not give solution in image format thanku Kayla is playing a lottery in which she is asked…

A: Expected Value:Expected value (also known as EV, expectation, average, or mean value) is a long-run…

Q: Find the Rank of c 32 3. 4

A: Matrix operation

Q: Calculate the risk of fire if the probability of a release is 2.13 x 106 per year. The probability…

A:

Q: Write various formulas for degree of freedom.

A:

Q: A contingency table is having 2 rows and 3 columns. Find the degrees of freedom?

A: Answer: From the given data, For a contingency table, Number of rows (r) = 2 Number of columns (c) =…

Q: A contingency table has 2 rows and 6 columns What is the value of degrees of freedom

A: Answer: From the given data, Number of rows (r) = 2 Number of columns (c) = 6

Q: what is the correct answer?

A: (B) In both tournaments, at least half the golfers completed the tournament with a score less than…

Q: You are running a race and pass the person in 2nd place. What place are you in now

A: Given  If you are running a race and pass the person in 2nd palace.

Q: Explain an easy way to show that the proportions and are = not equivalent.

A: We have to show that the given proportions are not equivalent: x7=23 and x2=37. We know from…

Q: Please do not give solution in image formate thanku  Two students at a local high school conducted…

A: It is stated that Jillian obtained 5 classes from a list of classes at the high school as a sample.…

Q: passes through (-4, -3)

A: Given: (-4, -3), (-9, 26), and (-3, 3

Q: The number of employees hired in different co.psnies are  36 , 60 , 71, 91 , 16 ,61  Find the mid…

A: Measure of central tendency measures the central or average value of a dataset. Measured of…

Q: 1. Why is there a need to study the History of Mathematics?

A: Need to study the History of Mathematics.

Q: n=9, p=0.2x<3

A: Here we need to find P(X&lt;3).

Q: Py: Ž un e (n-2)1

A: The solution is given as follows

Q: passes through (3, -7) and (4, -11)

A: Given: Points (3,-7) and (4,-11)

Q: Question is What do you conclude?

A: Given α=0.05            n = 39+32 =71           p0=0.5          Sample proportion p=3971=0.5493…

Q: a 1 GRADE 10 Find the number of distinguishable permutation of the letters in the word "COMMITTEE".…

A: