Answered: Which of the following intervals on…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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You really struggle remembering to bring your lunch to work. Each day seems to be independent as to whether you remember to bring your lunch or not. The chance that you forget your lunch each day is 27.8%. Consider the next 36 days. Let X be the number of days that you forget your lunch out of the 36 days. Calculate the following:
Identify the methods of computing dispersion?
In a student survey, forty-one part-time students were asked how many courses they were taking this term. The (incomplete) results are shown below: Please round your answer to 4 decimal places for the Relative Frequency if possible. # of Courses Frequency Relative Frequency Cumulative Frequency 1 15 15 2 13 0.3171 28 3 13 0.3171 What percent of students take exactly one courses? %
Compute a 95% CI for the mean age (in years). (Enter your answer using interval notation. Round your numerical values to two decimal places.) in years (b) Compute a 95% CI for the mean white blood count (in thousands) (use the variable named "First WBC (x 1000) following admission") following admission. (Enter your answer using interval notation. Round your numerical values to two decimal places.) thousands (c) Compute a 90% CI for the mean white blood count (in thousands) (use the variable named "First WBC (x 1000) following admission") following admission. (Enter your answer using interval notation. Round your numerical values to two decimal places.) thousands
1. 2. 3. Devon is expected to receive 70% of the votes at the student council election. If there are 650 students in his school, how many are expected to vote for him? The probability of being born in a particular month is about 1:12. Determine the probability of not being born in September. Express this ratio as a fraction, a decimal, a percent and in words. In his first hockey game of the season, Brayden takes a total of 10 shots on the goalie and scores 1 time. Later in the season, he takes 30 shots in total on the goalie. How many goals would you expect him to make? What assumptions are making? Are your assumptions realistic? Explain.
Suppose that X, Y, and Z are jointly distributed random variables, that is, they are defined on the same sample space. Suppose that we also have the following. E(X)=-9 E (Z) = 1 E (Y)=-6 Var(Y)=28 Var(Z) = 47 Var (X)=44 Compute the values of the expressions below. E (2-Z) = 0 E(X+32)=0 -5 -2-Var(4X) = 0 E(-x²) = 0 Continue □ X S M 31 Ⓒ2022 McGraw Hill LLC. All Rights Reserved
researchers calculated for their study that the mean difference () = 5.65 and the SE of the Mean Difference () = 2.58, the t value is _____
town mayor believes the average street is 14 ft wide. To test this, 9 streets are measured and the numbers are recorded. 11 10 14 11 10 13 9 12 14 Find each 2-decimal answer for a 93% interval Small # on the interval Large # on the interval Margin error
true or false: If a 90% CI for the difference between two means is calculated to be [ 6.2, 9.6] then in words this is interpreted as the 90% of the time the true population difference in means will be between 6.2 and 9.6
Joshua went to a doctor's appointment yesterday. He was weighed and the paperwork said that his weight put him in the 35th percentile for weight. This means that for all [gender] that were weighed at the same [age], [per]% of them weighed [compare] Joshua. Question options: [gender] boy [gender] girls [gender] all kids [age] day [age] week [age] age [per] 35 [per] 65 [compare] more than [compare] less than [compare] the same as
Systolic coefficients of variation are 14.2% and the Diastolic is 17% The coefficients of variation for each data set are: a. more than 5 percentage points apart b. within 5 percentage points of each other Therefore, the systolic measurements vary a. about the same as b. significantly more than c. significantly less than the diastolic measurements.
A large automobile insurance company selected samples of single and married male policyholders and recorded the number who made an insurance claim over the preceding three-year period. Single Policyholders Married Policyholders n1=550 n2=1,000 Number making claims = 110 Number making claims = 150 a. Use a=0.05 Test to determine whether the claim rates differ between single and married male policyholders. z-value (to 2 decimals) p-value (to 4 decimals) b. Provide a 95% confidence interval (to 4 decimals) for the difference between the proportions for the two populations. Enter negative answer as negative number. ( , )

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Which of the following intervals on average weight loss over a month (in pounds) for a new diet is a 90% interval and which is a 99% interval? (8, 10) (6, 11)