Given the sample data set
s = [1,1,2,2,2,9,-5,-10,8,0]
Compute the mean, median, mode, variance and standard deviation
on paper/ text editor. Show all calculation steps for full
credit.
Compute and verify the above statistical quantities using
python. You can use the statistics package. Feel free to
modify the sample code provided in the pre-class material. Your
code must clearly print out the required quantities when executed.
The display on screen must clearly say what quantity is being
printed (eg: “The...
Calculate the mean, median, mode, variance, and standard
deviation for the following data set. (5 answers, 0.4 pts
each)
Number of cigarettes smoked per day was recorded for 10 study
subjects.
Study Subject
# of cigarettes smoked/day
A
5
B
7
C
3
D
10
E
6
F
10
G
20
H
0
I
5
J
12
In a sample of 200 UM students, 170 students reported listening
to Eminem daily. In a similar sample of 150
OSU students, 107 students reported listening to Lizzo daily.
a. Do the same proportion of UM and OSU students listen to Lizzo
every day? Test at 98% confidence
b. If you want to create a 90% confidence interval with a margin of
error of .09, and want to include 1.5
times as many OSU students as UM students, how many...
In a sample of n=3,600 students, the average GPA was x⎯⎯=3.5
with a sample variance of s2=0.25. Calculate the 98% confidence
interval for the population GPA μ
The formula for the confidence interval is
Question 2 options:
x±zα2/×s2n
x±zα2/×sn
x±zα2/×s2n√
None of the above.
Q1
In a class on 50 students, 35 students passed in all subjects, 5
failed in one subject, 4 failed in two subjects and 6 failed in
three subjects.
Construct a probability distribution table for number of subjects a
student from the given class has failed in.
Calculate the Standard Deviation.
Q2
45 % of the employees in a company take public transportation daily
to go to work. For a random sample of 7 employees, what is the
probability that...
A sample survey of 36 randomly selected households shows
that the median household income of the eastern NC residents is
$51,000, with a standard deviation of $1075. Test the (null)
hypothesis that the actual (real) median household income is
$52,752 at 0.05% confidence level.
1.Given a sample of the following values, what is the variance
and standard deviation? {15, 5, 14, 11, 5}
2.
Given the Contingency table below, calculate the probability
that an individual drawn randomly would be Under 40 and wants a
Smart Phone as a prize.
Table of Prize Choice by Age
Chosen Device
Smart Phone
Smart Watch
Totals
Ages
Under 40
30
80
110
40 and Up
50
40
90
Totals
80
120
200
Excel Questions
Q1. What is the sample mean of income?
Q2. What is the sample standard deviation of income? For
questions 3 and 4, construct a 95% confidence interval for the
average house price.
Q3. Enter the low end of the interval.
Q4. Enter the high end of the interval
Q5. The the typical household income in Indiana is $52,314.
Suppose we want to test whether the people in this town earn a
different amount on average. Find the p-value...
5. The number of daily texts sent by Marymount students are
normally distributed with a mean of 80 texts and a standard
deviation of 50 texts.
(a) Find the probability that a randomly selected Marymount
student sends more than 100 texts each day.
(b) Find the probability that 25 randomly selected Marymount
students will have a mean number of daily texts sent that is
greater than 50 texts.
(c) Suppose a parent wants their child in the bottom 25% of...