A. Classify each random variable as discrete or continuous.1. X: Number of women among 20 newly hired teachers2. Y: Height (in centimeters) of a 30 randomly selected adult males3. Z: Number of car accidents among 8 selected cities4. A: Amount of rainfall (in millimeters) in different cities in Metro Manila5. B: Number of gifts received by 20 students during Christmas season

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Answered: A. Classify each random variable as…

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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2. Dr. Xyz claims that the average salary of workers in Jones is P35,000. A random sample of 100 workers are found that their mean salary is P40,000. H, H,: EXPLANATION :
Consider a population of 800 values that are normally distributed with a mean of 80 and standard deviation of 5. To the nearest integer, how many values are between 75 and 83? a) 454 b) 567 c) 665 d) 756
1. Big Blossom Greenhouse was commissioned to develop an extra large rose for the Rose Bowl Parade. A random sample of blossoms from Hybrid A bushes yielded the following diameters (in inches) for mature peak blooms. 2 in, 3 in, 3 in, 8 in, 10 in, 10 in a. What is the mean of the sample? b. What is the range of the sample?
7) At one college, GPA's have a distribution that is unimodal and symmetric with a mean of 2.6 and a standard deviation of 0.5. What is the range of GPA's from one standard deviation below the mean to one standard deviation above the mean? A) 2.6 to 3.1 B) 2.1 to 3.1 C) 0.5 to 3.1 D) 2.1 to 2.6
1. "The weights of 1,000 children, in average, is 45kg with standard deviation of 18kg. Suppose the weights are normally distributed, how many children weigh between 53kg and 58kg?"a. 670b. 236c. 94d. 764
1. A researcher plans to conduct a survey among students in a public high school. If the population of thisschool is 5,000, find the sample size and the percentage from the N population. (Margin of error is 5%)A = {9,10,11,7,13}B = {10,10,10,10,10}C = {1,1,10,19,19}a. Calculate the mean of each data set.b. Calculate the standard deviation of each data set.c. Which set has the largest standard deviation?
Consider a sample with data values of 10, 40, 60, 85, 90. Compute the IQR. Select one: O a. 45 b. 85 С. 90 d. 60 е. 40 Of. 10
6. The trade volume of a stock is the number of shares traded on a given day. The data in the first accompanying table, in millions (so that 6.22 represents 6,220,000 shares traded), represent the volume of a certain stock traded for a random sample of 40 trading days in a certain year. A second random sample of 40 days in the same year resulted in the data in second accompanying table. Complete parts (a) through (d) below. Click here to view the data for the first sample. Click here to view the data for the second sample.11 Click here to view the table of critical t-values.12 10 (a) Use the data from the first sample to compute a point estimate for the population mean number of shares traded per day in the year. A point estimate for the population mean number of shares traded per day in the year is million. (Round to three decimal places as needed.) (b) Using the data from the first sample, construct a 95% confidence interval for the population mean number of shares traded per day in…
how many women must be randomly selected to estimate the mean weight of women in one age group. we want 90% confidence that the sample mean is within 3.4 lb of the population mean, andthe population standard deviation is known to be 25 lb. A) 147 B) 148 C) 208 D) 146
The chromium percentages of the samples obtained from the drillings in the field are given below. Prepare the frequency table of the distribution by taking the lower limit of the first class as 20 and the class interval as 10 in the frequency table and answer the questions below a) What is the avarege of the distribution? b) What is the Standard Deviation of the Distribution? c) What is the coefficient of variation of the distribution? d) What is the median value of the distribution?

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