The 2010 U.S. Census found the chance of a household being a certain size. The data is in the pmf below ("Households by age," 2013). Let X be the number (size) in a household. E(X)= k·P(X = k) 7 (or more) P(X=k) 0.267 0.336 0.158 0.137 0.063 0.024 0.015 k 1 2 3 5 6 a) The probability of a household size being more than 5, P(X> 5) = % b) In the long run, we are expected to see a household size of, E(X)= on average. Round answer to three decimal places. c) The probability that the size of a household is equal to two is %. d) The probability of a household size being three OR six is %.

The 2010 U.S. Census found the chance of a household being a certain size. The data is in the pmf below ("Households by age," 2013). Let X be the number (size) in a household. E(X)= k·P(X = k) 7 (or more) P(X=k) 0.267 0.336 0.158 0.137 0.063 0.024 0.015 k 1 2 3 5 6 a) The probability of a household size being more than 5, P(X> 5) = % b) In the long run, we are expected to see a household size of, E(X)= on average. Round answer to three decimal places. c) The probability that the size of a household is equal to two is %. d) The probability of a household size being three OR six is %.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

The table shows the height in feet, y, of a soccer ball above the ground x seconds after the ball was kicked. Time in seconds (x) Height in feet 1 2 4 9.1 13.5 16.9 15.4 12.8 Assuming the trend continues, which is the best prediction for the height of the ball at 6 seconds? OA 16.3 feet strike Reset OB 9.7 feet Strike Reset OC 6.9 feet strike Reset OD. 1.3 feet Strike Reset
It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific cultural affiliation as the elevation of the site increases. Let x be the elevation (in thousands of feet) for an archaeological site in the southwestern United States. Let y be the percentage of unidentified artifacts (no specific cultural affiliation) at a given elevation. Suppose that the following data were obtained for a collection of archaeological sites in New Mexico: x 5.50 6.25 6.75 7.50 8.00 y 6 15 14 52 58 Find ȳ. Group of answer choices 29.00 34.75 –34.75 –17.40
Look at an ogive of the data using five classes. What percent of the wells have a pH less than 8.15? (Round your answer to two decimal places.) % Suppose a certain crop can tolerate irrigation water with a pH between 7.35 and 8.55. What percent of the wells could be used for such a crop? (Round your answer to two decimal places.) %
(E)If age were held fixed, but a person put on 15 pounds, what would you expect for the corresponding change in systolic blood pressure? (Use 2 decimal places.)If a person kept the same weight but got 15 years older, what would you expect for the corresponding change in systolic blood pressure? (Use 2 decimal places.)Test each coefficient to determine if it is zero or not zero. Use level of significance 5%. (Use 2 decimal places for t and 3 decimal places for the P-value.) t P value β2 β3 (fFind a 90% confidence interval for each coefficient. (Use 2 decimal places.) lower limit upper limit β2 β3 (g) Suppose Michael is 68 years old and weighs 192 pounds. Predict his systolic blood pressure, and find a 90% confidence range for your prediction. (Use 1 decimal place.) prediction lower limit upper limit
From the data given below, calculate Yule's coefficient of association between weight of children and their economic condition, and interpret it. Rich Children Poor Children Below Normal weight 75 23 Above Normal weight 42 42
It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific cultural affiliation as the elevation of the site increases. Let x be the elevation (in thousands of feet) for an archaeological site in the southwestern United States. Let y be the percentage of unidentified artifacts (no specific cultural affiliation) at a given elevation. Suppose that the following data were obtained for a collection of archaeological sites in New Mexico: x 5.50 6.50 7.25 8.00 8.75 y 10 41 53 89 89
For the image below, what would you input into the graphing calculator function to find the probability of the shaded region? Z= -0.92 (the z-value in the picture is -0.92)
You are conducting a study to see if the probability of catching the flu this year is significantly different from 25%. With Ha : p ≠ 25% you obtain a test statistic of z=−1.54 Find the P-value accurate to 4 decimal places.P-value =
the values are in the 2nd picture under Example 2
Consider the following data: x −6 −5 −4 −3 −2 P(X=x) 0.2 0.2 0.2 0.2 0.2 Find the value of P(X<−3). Round your answer to one decimal place. Find the value of P(X>−6). Round your answer to one decimal place.
A study asked respondents, "If ever married, how old were you when you first married?" The results are summarized in the technology excerpt that follows. Complete parts (a) through (d) below. One-Sample T: AGEWED Variable N Mean StDev SE Mean 95.0% CI AGEWED 26790 23.070 4.991 0.030 (23.010, 23.130) Click the icon to view the table of critical t-values. (a) Use the summary to determine the point estimate of the population mean and margin of error for the confidence interval. x3D (Type an integer or a decimal. Do not round.)
The equation below estimates the effect of race on the probability of mortgage denial, holding constant the payment-to-income ratio. Pr (deny=1|P/I ratio, black) =(-2.29+2.78P/I ratio +0.71 black) (0.16) (0.46) (0.087) A black mortgage applicant has a P/l ratio of 0.38. What is the predicted probability that his application will be denied? The predicted probability that his application will be denied is%. (Express your response as a percentage and round to two decimal places)