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Questions -
Q1. The following table shows the number of mobile phones females and males owned.
Age
Males
Females
0 < 10
64
90
10 < 20
199
175
20 < 30
365
210
30 < 40
190
255
40 < 50
121
205
50 < 60
43
55
60 < 70
18
10
Calculate the mean, median, mode standard deviation and co-efficient of variation.
Q2. The monthly charges for using the tolls from two suburbs are:
Cost of toll ($)
Dandenong
Frankston
30 < 60
40
60 < 90
124
60
90 < 120
192
131
120 < 150
101
122
150 < 180
30
81
180 < 210
7
42
210 < 240
3
28
240 < 270
2
15
270 < 300
1
11
Calculate the mean, median, mode standard deviation and co-efficient of variation?
Is the direction of net force always in the direction of motion? Explain.
Why would it not make sense to find the correlation or to perform linear regression with this data set? Explain.
1. the regression line y -3 2.5 x has been fitted to the data points 28 60 20 50 10 18 and 25 55. the sum of the
What decision should the author make about the null hypothesis (i.e., retain or reject)? What are two possible interpretations?
For each of the following chi-square statistics or p-values based on a chi-square test for a 2 2 table, would the relationship be statistically significant?
The maturity risk premium is 0.40 percent on 2-year securities and increases by 0.07 percent for each additional year to maturity. Calculate the default risk premium on NikkiG's 10-year bonds. (Round your answer to 2 decimal places.)
Visit the CDC National Center for Health Statistics to explore national vital statistic results with a focus on birth rates, death rates and cancer rates. Next, explore the vital statistics in you respective state health departments.
A population of scores forms a normal distribution with a mean of U=80 and a standard deviation of o=10 a. What proportion of the scores have values between 75 and 85? b. For samples of n=4, what proportion of the samples will have means between 75..
Find the probability that the number who consider themselves baseball fans is? (a) exactly? five, (b) at least? six, and? (c) less than four.
1. for a standard normal model find the z-value that is less than the mean and for which 67 of the area under the
Twenty-six percent of couples who plan to marry this year are planning destination weddings. In a random sample of 12 couples who plan to marry, find the probability that exactly 6 couples will have a destination wedding.
If the average amount of life insurance per household is $165,000 with a standard deviation of $40,000, and we select a random sample of 50 households
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