Fundamentals of Biostatistics
8th Edition
ISBN: 9781305268920
Author: Bernard Rosner
Publisher: Cengage Learning
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The proportion of phones that have more than 47 apps is 0.8783
Part: 1 / 2
Part 2 of 2
(b) Find the 70th
The 70th
percentile of the number of apps. Round the answer to two decimal places.
percentile of the number of apps is
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Hi, I need to sort out where I went wrong. So, please us the data attached and run four separate regressions, each using the Recruiters rating as the dependent variable and GMAT, Accept Rate, Salary, and Enrollment, respectively, as a single independent variable. Interpret this equation.
Round your answers to four decimal places, if necessary. If your answer is negative number, enter "minus" sign.
Equation for GMAT:
Ŷ = _______ + _______ GMAT
Equation for Accept Rate:
Ŷ = _______ + _______ Accept Rate
Equation for Salary:
Ŷ = _______ + _______ Salary
Equation for Enrollment:
Ŷ = _______ + _______ Enrollment
Question 21 of 28 (1 point) | Question Attempt: 5 of Unlimited
Dorothy ✔
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= 21
22 >
How many apps? According to a website, the mean number of apps on a smartphone in the United States is 82. Assume
the number of apps is normally distributed with mean 82 and standard deviation 30.
Part 1 of 2
(a) What proportion of phones have more than 47 apps? Round the answer to four decimal places.
The proportion of phones that have more than 47 apps is 0.8783
Part: 1/2
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Chapter 10 Solutions
Fundamentals of Biostatistics
Ch. 10.2 - What is a contingency table?Ch. 10 - Consider the Physicians Health Study data...Ch. 10 - Consider the Physicians Health Study data...Ch. 10 - Answer Problem 10.1 if a one-sided test with power...Ch. 10 - Consider the Physicians Health Study data...Ch. 10 - Answer Problem 10.4 if compliance is as given in...Ch. 10 - Consider the Physicians Health Study data...Ch. 10 - Consider the Physicians Health Study data...Ch. 10 - Gastroenterology Two drugs (A, B) are compared for...Ch. 10 - Gastroenterology Two drugs (A, B) are compared for...
Ch. 10 - Gastroenterology Two drugs (A, B) are compared for...Ch. 10 - Sexually Transmitted Disease Suppose researchers...Ch. 10 - Cancer A 1980 study investigated the relationship...Ch. 10 - Ophthalmology Retinitis pigmentosa is a disease...Ch. 10 - Pulmonary Disease One important aspect of medical...Ch. 10 - Prob. 24PCh. 10 - Hepatic Disease Refer to Data Set HORMONE.DAT, at...Ch. 10 - Health Services Administration In the Harvard...Ch. 10 - Health Services Administration In the Harvard...Ch. 10 - Orthopedics A study was performed among subjects...Ch. 10 - Prob. 54PCh. 10 - Prob. 55PCh. 10 - Prob. 56PCh. 10 - Prob. 57PCh. 10 - Prob. 58PCh. 10 - Cancer A topic of current interest is whether...Ch. 10 - Cancer A topic of current interest is whether...Ch. 10 - Ophthalmology A 5-year study among 601...Ch. 10 - Prob. 74PCh. 10 - Prob. 77PCh. 10 - Prob. 87P
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- Calculate the 90% confidence interval for the population mean difference using the data in the attached image. I need to see where I went wrong.arrow_forwardMicrosoft Excel snapshot for random sampling: Also note the formula used for the last column 02 x✓ fx =INDEX(5852:58551, RANK(C2, $C$2:$C$51)) A B 1 No. States 2 1 ALABAMA Rand No. 0.925957526 3 2 ALASKA 0.372999976 4 3 ARIZONA 0.941323044 5 4 ARKANSAS 0.071266381 Random Sample CALIFORNIA NORTH CAROLINA ARKANSAS WASHINGTON G7 Microsoft Excel snapshot for systematic sampling: xfx INDEX(SD52:50551, F7) A B E F G 1 No. States Rand No. Random Sample population 50 2 1 ALABAMA 0.5296685 NEW HAMPSHIRE sample 10 3 2 ALASKA 0.4493186 OKLAHOMA k 5 4 3 ARIZONA 0.707914 KANSAS 5 4 ARKANSAS 0.4831379 NORTH DAKOTA 6 5 CALIFORNIA 0.7277162 INDIANA Random Sample Sample Name 7 6 COLORADO 0.5865002 MISSISSIPPI 8 7:ONNECTICU 0.7640596 ILLINOIS 9 8 DELAWARE 0.5783029 MISSOURI 525 10 15 INDIANA MARYLAND COLORADOarrow_forwardSuppose the Internal Revenue Service reported that the mean tax refund for the year 2022 was $3401. Assume the standard deviation is $82.5 and that the amounts refunded follow a normal probability distribution. Solve the following three parts? (For the answer to question 14, 15, and 16, start with making a bell curve. Identify on the bell curve where is mean, X, and area(s) to be determined. 1.What percent of the refunds are more than $3,500? 2. What percent of the refunds are more than $3500 but less than $3579? 3. What percent of the refunds are more than $3325 but less than $3579?arrow_forward
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