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@ Exam 2: Chapters 5-7 - Personal - Microsoft Edge s (] X () https://mylab.pearson.com/Student/PlayerTest.aspx?TestResultld=1057569681&review=yes&questionld=13 A -' 04/15/246:03PM (%) Review Test Exam 2: Chapters57 < Question25,7579 > lestScore:82.13% 28750f35paints @ close Statistics 2024SP ATW350 @ Points: 1.76 of 2 A double-blind study using random assignment was done of pregnant women in a certain country. Women were given fish oil or a placebo during pregnancy. Their children were followed during the first 5 years of Question list |é life to see if they developed asthma. The results are summarized in the accompanying table. Complete parts (a) through (c) below. N Developed asthma Fish Oil Placebo Yes 40 62 % Question 18 No 397 377 %, Question 19 ) ) ; ) a. Calculate and compare the percentages of children who developed asthma in the fish oil group and in the placebo group. - The percentage that developed asthma in the treatment group, 9.2 %, is less than the percentage that developed asthma in the placebo group, 1441‘%, so children whose mother's received the ° Question 20 fish oil during pregnancy did better. The difference in percentages (treatment minus placebo) is - 5.0%. (Round to one decimal place as needed.) @ b. Check that the conditions for using a two-population confidence interval hold. You answered: 4.8 % Question 21 n Correct answers: -5.0 The Random and Independent condition holds. 49 The Large Samples condition holds. @ Question 22 The Big Populations condition can reasonably be assumed to hold. The Independent Samples condition holds. %, Question 23 c. Find the 95% confidence interval for the difference in the proportion of children who develop asthma in the two groups. Based on your confidence interval, can we conclude that there is a difference in the population proportions? The 95% confidence interval for the difference (treatment minus placebo) is ( —.092 , —.007 ). 0 Question 24 (Round to three decimal places as needed.) | am 95% confident that the difference in population proportions is between the lower and upper boundaries of the confidence interval. The interval does not capture 0, suggesting that it x// Question 25 is not plausible that the proportions are the same. Since the boundary values are both negative, we can conclude that a lesser proportion of children whose mothers took fish oil during pregnancy + developed asthma. M 5:54 PM 1 o @ & @ 79°F Sunny D & G sl e N
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A company has cost and revenue functions, in dollars, given by C(q) = 6000 + 8g and R(g) = 12g.
(a) Find the cost and revenue if the company produces 500 units. Does the company make a profit? What about 5000 units?
Enter the exact answers without comma separation of digits.
The cost of producing 500 units is $
i
The revenue if the company produces 500 units is $ i
Thus, the company
v a profit.
The cost of producing 5000 units is $
The revenue if the company produces 5000 units is $i
Thus, the company
v a profit.
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(b) Find the break-even point.
Enter the exact answer.
The break-even point is i
units.
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Which of tbe fellowina illust
break even point aranbically?
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Exercise 08.46 Algorithmic
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The 92 million Americans of age 50 and over control 50 percent of all discretionary income. AARP estimates that the average annual expenditure on restaurants and carryout
food was $1,876 for individuals in this age group. Suppose this estimate is based on a sample of 80 persons and that the sample standard deviation is $550. Round your
answers to the nearest whole numbers.
a. At 99% confidence, what is the margin of error?
b. What is the 99% confidence interval for the population mean amount spent on restaurants and carryout food?
C. What is your estimate of the total amount spent by Americans of age 50 and over on restaurants and carryout food?
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d. If the amount spent on restaurants and…
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Midterm Statistics(2) (2020-2021GICI31STA_GIC_Statistics_OL Say_Mardi_7-9am)
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Let X1, X2, X3,..., Xn be a random sample from a Geometric distribution
Geo(0), where 0 is unknown. Find the maximum likelihood estimator (MLE) of
O based on this random sample. Recall that the pmf of X ~ Geo(0) is
f(x; 0) = (1 – 6)*-10,
(a) Ômle = X
(b) Ômle = 1/X
x = 0, 1, ....
%3D
(c) Ômle = E=, In X,
(d) Ômle = 2X
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(b)
(c)
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Review Of Menstrua.
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The table below displays the adult literacy rate in Bolivia for several different years. The adult literacy rate is the percentage of people ages 15 and above who can both read and write with understanding a short simple statement about their everyday life.
Data downloaded on 2/19/2020 from https://ourworldindata.org/grapher/literacy-rate-adults?tab=chart&time=1973..2016.
Year 1976 2001 2012
Literacy Rate 63.2% 86.7% 94.5%
When answering the questions below, round to four decimal places in your intermediate computations.
Use interpolation or extrapolation (whichever is appropriate) to predict the literacy rate in Bolivia in 1992. Round your answer to one decimal place. You only get one submission for the unit.
---Select---
Use interpolation or extrapolation (whichever is appropriate) to predict the literacy rate in Bolivia in 2050. Round your answer to one decimal place. You only get one submission for the unit.
---Select---
Is your 2050 prediction realistic? You must…
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Given P(A^c-complement)=0.40, P(B) =0.40, P(AUB)=0.75, P(A)= 0.60, P(B^c)=0.75
Find P((AnB)^c)
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Question_3
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Quiz for Chapter 21 LearningCur X +
/learningcurve.macmillanlearning.com/?user_id=3e6bfbb2-26e7-11ed-9c99-653e998b9738&file=stats%2Fbps9e%2Fbps9e_chapter21_achieve&itemic
X
D21 Chapter 21 Learning Curve: Comp X
An experiment was conducted to see if elderly patients had more trouble keeping their balance when loud,
unpredictable noises were made compared to younger patients who were also exposed to the noises.
Researchers compared the amount of forward and backward sway for the two groups. The researchers
conducted the experiment and obtained data summarized in the following table:
XSE
Elderly Young
26.33 18.13
9.77
4.09
9
18
The standardized test statistic is t =
equation? Answer to two decimal places.
Your answer:
2.30
E
Need help on this question?
Read the ebook page on this topic
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CO
26.33-18.13
B2
9.772+ B²
18
O Search
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2.30. What belongs in place of the letter B in the
G
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What does power curve shows?
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The data in the Table below are a sample of 25 patients discharged from Regional Referral Hospital as part of a retrospective chart review of antibiotic usage in hospitals
Notes: ID no = patient number, temp = temperature, med = medical and surg = surgery
Describe any five variables using both numeric and graphic (use graph paper) methods for each of the variable. For each of the selected variable, use statistics and one graph.
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hospital du
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find estimator
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How to show?
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Determine the median of the data in the frequency table
Lines at the Department of Motor Vehicles are so long! A supervisor decided to conduct a study on the number of people standing in line. At the beginning of each hour for an entire week, the supervisor counted the number of people in line and recorded the number. At the end of the week, the supervisor made the frequency table below. Note that the first column shows the number of people in line at the beginning of the hour. The second column shows the number of times that length of line occurred in the 40 observations.
Number of People in Line
Frequency
1
2
2
1
3
1
4
4
5
5
6
3
7
5
8
4
9
3
10
3
11
9
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A multiple regression equation to predict a student's score in College Algebra (ˆyy^) based on their high school GPA (x1x1), their high school Algebra II grade (x2x2), and their placement test score (x3x3) is given by the equation below.
ˆyy^ = -9 + 5 x1x1 + 6 x2x2 + 0.3 x3x3
a) According to this equation, what is the predicted value of the student's College Algebra score if their high school GPA was a 3.9, their high school Algebra II grade was a 2 and their placement test score was a 40? Round to 1 decimal place.b) According to this equation, what does the student's placement test score need to be if their high school GPA was a 3.9, their high school Algebra II grade was a 2, and their predicted College Algebra score was a 67? Round to 1 decimal place.
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Conduct a correlation analysis for two variables based on the information in the table
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If the average number of yards per game of all the HS wide receivers catches with 50 attempts in the 2010 season averaged 49 yards per game. A sample of 20 wide receivers from 2010 averaged 46.54 yards per game.
Is 49 yards a parameter or statistic? and provide correct statistical notation
Is 46.54 years a parameter or statistic? and provide correct statistical notation
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- Homework 7 (Chapter 14) - Part A
O The American Association of Individual Investors (AAII) On-Line Discount Broker Survey polls members on their experiences with discount brokers. As part of
the survey, members were asked to rate the quality of the speed of execution with their broker as well as provide an overall satisfaction rating for electronic
trades. Possible responses (scores) were no opinion (0), unsatisfied (1), somewhat satisfied (2), satisfied (3), and very satisfied (4). For each broker summary
scores were computed by calculating a weighted average of the scores provided by each respondent. A portion of the survey results follow (AAII website,
February 7, 2012).
Brokerage
Speed
Satisfaction
Scottrade, Inc.
2.4
2.4
Charles Schwab
3.8
3.5…
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- M ui/v2/assessment-player/index.html?launchld=3cb6995a-a464-4ce8-9952-7c527abd86ce#/question/2 -/1 E Question 3 of 14 View Policies Current Attempt in Progress A company has cost and revenue functions, in dollars, given by C(q) = 6000 + 8g and R(g) = 12g. (a) Find the cost and revenue if the company produces 500 units. Does the company make a profit? What about 5000 units? Enter the exact answers without comma separation of digits. The cost of producing 500 units is $ i The revenue if the company produces 500 units is $ i Thus, the company v a profit. The cost of producing 5000 units is $ The revenue if the company produces 5000 units is $i Thus, the company v a profit. eTextbook and Media (b) Find the break-even point. Enter the exact answer. The break-even point is i units. eTextbook and Media Which of tbe fellowina illust break even point aranbically? ssion_..docx 2 Discussion_-..docx - Discussion_...docx MacBook Proarrow_forwardcom/static/nb/ui/evo/index.html?deploymentld%3D57211919418147002668187168&elSBN=9781337114264&id%3D900392331&snapshotld%3D19233498 GE MINDTAP Q Search this course -ST 260 Save Submit Assignment for Grading ons Exercise 08.46 Algorithmic « Question 10 of 10 Check My Work (4 remaining) eBook The 92 million Americans of age 50 and over control 50 percent of all discretionary income. AARP estimates that the average annual expenditure on restaurants and carryout food was $1,876 for individuals in this age group. Suppose this estimate is based on a sample of 80 persons and that the sample standard deviation is $550. Round your answers to the nearest whole numbers. a. At 99% confidence, what is the margin of error? b. What is the 99% confidence interval for the population mean amount spent on restaurants and carryout food? C. What is your estimate of the total amount spent by Americans of age 50 and over on restaurants and carryout food? million d. If the amount spent on restaurants and…arrow_forward> Search itc.edu.kh v Activity Midterm Statistics(2) (2020-2021GICI31STA_GIC_Statistics_OL Say_Mardi_7-9am) Close Teams Hi DIM LIFY, when you submit this form, the owner will be able to see your name and email address. Assignments 1 Question 5 Calendar (20 Points) Files Let X1, X2, X3,..., Xn be a random sample from a Geometric distribution Geo(0), where 0 is unknown. Find the maximum likelihood estimator (MLE) of O based on this random sample. Recall that the pmf of X ~ Geo(0) is f(x; 0) = (1 – 6)*-10, (a) Ômle = X (b) Ômle = 1/X x = 0, 1, .... %3D (c) Ômle = E=, In X, (d) Ômle = 2X %3D (a) (b) (c) Apps (d) 1:50 PM A Spotify T. General (2020-2021... Details | bartleby - .. A D 4) G E ENG 12/16/2020 O 田arrow_forward
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