The number of computers sold during one day by a small store is a random variable...

The number of computers sold during one day by a small store is a random variable XX with the following distribution:

P(0)=0.12,P(1)=0.19,P(2)=0.19,P(3)=0.12,P(4)=0.06,P(5)=0.32P(0)=0.12,P(1)=0.19,P(2)=0.19,P(3)=0.12,P(4)=0.06,P(5)=0.32

a. Compute the expected value E(X)E(X). Give your answer two decimal places.

E(X)=E(X)=

b. Compute the standard deviation σ(X)σ(X). Give your answer two decimal places.

σ(X)=σ(X)=

1 point) The problem below describes an experiment and defines a random variable.
(a) Find the distribution of the random variable (and provide it as a chart).
(b) Calculate the expected value of the random variable.
A certain brand of trading cards is available in smaller packs that cost $2 each. Assume that any given pack has a 10% chance of containing a rare card, independently of other packs. Alice will buy and open a pack until she gets a rare card, but she will not buy more than five. Let M be the amount of money (in dollars) that Alice will spend.
(a) Find the probability distribution of MM. (Enter possible values in numerical order.)

mm
P(m)P(m)

(b) Find the expected value:

Expert Solution

orchestra answered 1 year ago

The data table below shows the number of computers sold at the Bronco Store in a...

The data table below shows the number of computers sold at the Bronco Store in a week, based on online advertising. Online Ads Computers Sold 2 25 1 10 4 30 1 10 Sx = 10 2 25 Sy = 100 a. Calculate the means for both Ads and Computers Sold. b. Calculate the slope for the estimated regression equation. The (x-x)(y-y) = 40, just need to calculate denominator. c. Calculate the y-intercept for the estimated regression equation. ...

1. The data give the number of computers sold by an electronic store for a sample...

1. The data give the number of computers sold by an electronic store for a sample of 11 days.(12points)197252026441817121421a) Calculate the values of the three quartiles and the interquartile range.b) Is there an outlier? Justify your answer.c) Find the 68thpercentile. Briefly explain what it means.

In the following table, the random variable x represents the number of laptop computers that failed...

In the following table, the random variable x represents the number of laptop computers that failed during a drop-test of six sample laptops. Use the table to answer the questions a) - e) below. x 0 1 2 3 4 5 6 P(x) 0.377 0.399 0.176 0.041 0.005 0.000 0.000 a) Find and report the mean and the standard deviation of this distribution. b) Using the range rule of thumb, identify the range of values containing the usual number of...

The following table shows the frequency distribution for the number of personal computers sold during the...

The following table shows the frequency distribution for the number of personal computers sold during the past month in a sample of 40 computer stores located on the island. Computers sold Number of stores 4 < 13 6 13 < 22 9 22 < 31 14 31 < 40 7 40 < 49 4 Calculate the mean. Provide your answer to a decimal place.

There is a store selling newspapers. The number of daily sales X is a random variable...

There is a store selling newspapers. The number of daily sales X is a random variable and its expected value is 100 and the variance is 100. If the profit per one newspaper is 20 yen and the fixed cost is 500 yen per day, what is the variance of the profit per day? (Answer in the form of an integer or an irreducible fraction.)

Suppose the number of equipment sales and service contracts that a store sold during the last...

Suppose the number of equipment sales and service contracts that a store sold during the last six (6) months for treadmills and exercise bikes was as follows: Treadmill Exercise Bike Total sold 185 123 Service contracts 67 55 The store can only sell a service contract on a new piece of equipment. Of the 185 treadmills sold, 67 included a service contract and 118 did not. Complete the following questions in...

2. One week a computer store sold a total of 36 computers and external hard drives....

2. One week a computer store sold a total of 36 computers and external hard drives. The revenue from these sales was $25600. If computers sold for $1180 per unit and hard drives for $125 per unit, how many of each did the store sell? How many computers were sold? How many external hard drives were sold? 3. You invested $7000 between two accounts paying 3% and 9% annual interest, respectively. If the total interest earned for the year was...

Over a three day period a clothing store sold the following number of shirts: 51, 65,...

Over a three day period a clothing store sold the following number of shirts: 51, 65, and 44. Over the same period the clothing store had 3, 6, and 1 sales staff working on the shop floor. Answer the following questions: Enter your final answers in the boxes below. Show ALL working by uploading your handwritten working for this question to Laulima Dropbox within 15 minutes of completing your exam. Correct answers without working shown will not receive full credit....

The number of one type of sold product in one store is listed below. 51 55...

The number of one type of sold product in one store is listed below. 51 55 49 61 53 49 62 54 49 51 48 50 53 51 52 52 52 51 51 48 1.(5) calculate mean, median, mode, lower quartile and upper quartile. 2.(5) construct a modiﬁed box-plot.

The number of wooden sailboats constructed per month in a small shipyard is a random variable...

The number of wooden sailboats constructed per month in a small shipyard is a random variable that obeys the probability distribution given in Table below: Probability distribution of monthly Number of Sailboats /Probability( 2 is the sailboat and 0.15 is probability; likewise please consider in this way for the rest of the data) 2, 0.15; 3, 0.20; 4, 0.30; 5, 0.25; 6, 0.05; 7,0.05; Suppose that the sailboat builders have fixed monthly costs of $30,000 and an additional construction cost...

Question