a) The time, X minutes, taken by a company to install a satellite dish may also beassumed to be a normal variable, but with the following conditions:Р(x <170)- 0.14P(X <and P(x > 200) = 0.03Determine z, for P(X <170)= 0.14 and z,P(X > 200) = 0.03i.i.Write two equations based on information in i.iI.Find the values for the mean and standard deviation of X by solving the twoequations simultaneously.

X : Amount of time taken by a company to install a satellite dish (in minutes) Let us assume, X has…

Answered: The time, X minutes, taken by a company…

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter7: Analytic Trigonometry

Section7.6: The Inverse Trigonometric Functions

Problem 94E

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Accountants at the Tucson firm, Larry Youdelman,CPAs, believed that several traveling executives were submittingunusually high travel vouchers when they returned from businesstrips. First, they took a sample of 200 vouchers submitted from the past year. Then they developed the following multiple-regres-sion equation relating expected travel cost to number of days on the road ( x1 ) and distance traveled ( x2 ) in miles:yn = +90.00 + +48.50x1 + +.40x2The coefficient of correlation computed was .68.a) If Donna Battista returns from a 300-mile trip that took herout of town for 5 days, what is the expected amount she shouldclaim as expenses?b) Battista submitted a reimbursement request for $685. Whatshould the accountant do?c) Should any other variables be included? Which ones? Why?
Find an equation of the form y=abx+csin(π2x)y=abx+csin(π2x) that fits the data below
As a result of urbanization, the temperatures in Paris have increased. In 1891 the average daily minimum and maximum temperatures were 5.8°C and 15.1°C, respectively. Between 1891 and 1968, these average temperatures rose 0.019°C/yr and 0.011°C/yr, respectively. Assuming the increases were linear, find the year when the difference between the minimum and maximum temperatures was 9C, and determine the corresponding average maximum temperature.
A _____ is an equation that is false for all values of the variable.
The following computer output shows an estimated equation. Here; W: Weekly wage.MALE: Gender, takes the value of 1 if the worker is male and 0 if female. EDU:Education Level, EDU1=1 if the worker has no formal education and 0 otherwise,EDU2=1 if the worker has primary education and 0 otherwise, EDU3=1 if the workerhas secondary and high school degree and 0 otherwise, EDU4=1 if the worker hasbachelor, master, and/or Ph.D. degree and 0 otherwise. EXP: Experience (thenumber of years being employed).Dependent Variable: WMethod: Least SquaresDate: 01/02/21 Time: 09:15Sample: 1 935Included observations: 935Variable Coefficient Std. Error t-Statistic Prob.C 508.7969 49.56471 10.26531 0.0000MALE 486.2831 20.27897 23.97967 0.0000EDU2 37.93184 35.58875 1.065838 0.2868EDU3 153.9977 40.51264 3.801225 0.0002EDU4 251.2214 40.92353 6.138799 0.0000EXP 10.28997 2.548076 4.038331 0.0001R-squared 0.461610 Mean dependent var 957.9455Adjusted R-squared 0.458713 S.D. dependent var 404.3608S.E. of regression…
A teacher finds that for test grades in Class A, x̄ = 32 and S x = 4; for test grades in Class B, x̄ = 32 and S x = 8.a. What score should he predict for students in each class? b. Which class permits the better predictions? Why?

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