# X 13 16 18 21 23 25 26 31 p(x) .07 .21 .17 .25 .05 .04 .13 .08 the mean of the discrete random value variable x is the 20.59. What is the variance of X? Round your answer to the nearest hundredth a 27.89 b27.89 c33.15 d23.18

2 months ago

## Solution 1

Guest #5717
2 months ago
First compute the second moment:

Then the variance of is

## ðŸ“š Related Questions

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The probability of winning a prize in a local contest is 1 6. Find the actual odds against winning a prize A)1:5 B)1:6 C)5:1 D)6:1
Solution 1

Correct option is C i.e., 5:1.

Step-by-step explanation:

The probability of winning a price is

The probability of losing is

The actual odd against winning will be:

The ratio of losing to winning which is:

=

C)5:1

Solution 2
The probability of winning is 1/6
The probability of losing is 1-1/6=5/6
The odd against actual winning will be:
The ratio of winning to losing which is:
5:1
C)5:1
Question
Find the sum of the measures of the interior angles of a 52-gon.
Solution 1
We know that
52-gon means a polygon having 52 sides.Â
There is a formula for calculating the sum of interior angles of a polygon :Â
(2n-4) x 90Â° or (n-2) x 180Â° , where 'n' = number of sides.Â

Now, for sum of the interior angles of 52-gon:Â
(n-2) x 180Â°Â
=(52-2) x 180Â°Â
=50 x 180Â°Â
=9000Â°

the sum of the measures of the interior angles of a 52-gon is 9000Â°
Question
Suppose a1=2,an+1=12(an+2an). assuming an has a limit, find limnâ†’âˆžan= . hint: let a=limnâ†’âˆž. then, since an+1=12(an+2an), we have a=12(a+2a). now solve for a.
Solution 1
Looks like the sequence might be

Assume that . Then taking the limit of both sides, we have

But in order for the sequence to converge, only one of these values must be true. Since , each successive number will also be positive, so the limit must be .
Question
What is the tenth rule for A(n)=-9+5(n-1)
Solution 1
Given that the sequence follows the formula
A(n)=-9+5(n-1)
the tenth term will be given as follows:
From
A(n)=-9+5(n-1)
substitute n=10 in the equation we get:
A(10)=-9+5(10-1)
A(10)=-9+5(9)
A(10)=-9+45
A(10)=36

Question
A ________ is a numerical quantity computed from the data of a sample and is used in reaching a decision on whether or not to reject the null hypothesis. a. significance level b. critical value c. test statistic d. parameter
Solution 1
The answer for the completion exercise shown above is the second option (option b), which is:

Â b. critical value.

Â Therefore, you have that the text is: "A critical value is a numerical quantity computed from the data of a sample..."

Â This numeral quantity is used in statitics. Then, if the absolute value is greater that the quantity defined before, the null hypothesis must be rejected.
Question
Find the nth term of the sequence, then find the 20th term, 100th term and the series for each? 2/5, 1/15, -4/15,....
Solution 1

It's an arithmetic sequence where

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Substitute:

Other form:

Question
Joey has a credit card that uses the previous balance method. The opening balance of one of his 30-day billing cycles was $0, but this was his balance for only the first 15 days of the billing cycle. He then made a purchase that increased his balance to$7200, and his balance stayed this amount for the remainder of the billing cycle. If his credit card's APR is 13%, how much was Joey charged in interest for the billing cycle?
Solution 1
Nope the answer would be $0 for apex Question A company issued 5-year, 7% bonds with a par value of$100,000. the market rate when the bonds were issued was 6.5%. the company received $102,105 cash for the bonds. using the effective interest method, the amount of recorded interest expense for the first semiannual interest period is: multiple choice$1,750.00. $3,318.41.$3,500.00. $6,573.90.$7,000.00.
Solution 1

The amount for the first semiannual interest period is: Â  $3,318.41. ### What is semiannual rate of interest? The semi-annual rate is the simple annual hobby quotation for compounding twice a year. Coupon charges on bonds paying hobby twice per yr are commonly expressed as semi-annual prices. This makes prices broadly comparable, even as also allowing the amounts of constant hobby coupons to be decided effortlessly. Semiannual is an adjective that describes something that is paid, pronounced, published, or otherwise takes area twice every 12 months, normally as soon as every six months. expalnation; Time = 5 years bond interest rate = 7% parvalue =$100,00

market rate whwn the bond were issued = 6.5%

Amount received by the company = $102,105$102,105-$100,000=$2105

$2105/10 =$210.5

1000*.07*.5= $3500 the amount for the first semiannual period = 3500- 210.5 =$3289.5

Therefore, the first semiannual interest period is: Â  $3,318.41. Learn more about semiannual interest method here:-brainly.com/question/15069646 #SPJ2 Solution 2$102,105-$100,000=$2105

$2105/10 =$210.5

1000*.07*.5= $3500 3500- 210.5 =$3289.5

So in my estimation, it is $3,318.41 Question A company's board of directors votes to declare a cash dividend of$1.50 per share of common stock. the company has 30,000 shares authorized, 25,000 issued, and 24,500 shares outstanding. the total amount of the cash dividend is:
Solution 1
The total amount of dividend will be:
Total=(Number of issued shares)*(dividend per share)
Number of issued shares=25000
dividend per share=$1.5 thus the total dividend will be: 1.5*25000 =$37500
Question
System.out.print((k%3) + " "); if ((k % 3) == 0) k = k + 2; else k++; } what is printed as a result of executing the code segment? question 21 options: a. 0 2 1 0 2 b. 0 2 0 2 0 2 c. 0 1 2 1 2 1 2 d. 0 2 0 2 0 2 0 e. 0 2 1 0 2 1 0
Solution 1
Either B or D. Your question is missing information.

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