Question

John and Mary visited 29 randomly selected Starbucks locations and recorded the number of cappuccinos sold at each coffee shop on April 1st. They summarized the data in the following frequency distribution table: (Variable ,Frequency) (0, 2 ) (1, 5) ( 2, 8) (3, 10) (4, 4) (5, 2)

a. For this scenario, identify the following: • Variable • Individual (Subject) • Sample • What percentage of Starbucks locations sold at least 3 cappuccinos?

b. Calculate the sample mean. Note: to find the sample mean first multiply x by f where each x is the Variable multiplied by the f which is each Frequency that will give you a new column f(x) THEN dive the total of the obtained f(x) by the total Frequency from the original data.

c. Draw a relative frequency histogram for the data. Label axes and units

d. Use information from part b to fill in in the blanks in the following statement: Summary: In the random sample of the 29 Starbucks locations, there cappuccinos, on average, sold at each coffee shop.

III. The following data set represents the test scores of students in an English Class at a College during the Spring semester. 31 33 35 36 40 40 41 43 45 47 48 51 51 52 55 56 59 70 71 74 76 78 84 87 87 90 93

a. Obtain the five-number summary for the data. (The five-number summary is: Minimum, Q1, Q2= median, Q3, and Maximum)

b. Construct a box-plot using the five number-summary. Show any outliers

c. For this frequency distribution, which measure of the center is larger, the median or the mean? (You do not have to calculate the mean to answer this question).

d. Circle the correct choice and fill in the blank: The (median/mean) better describes the center of this data set because the shape of this frequency distribution is .

e. Complete the following sentence: The test score does not exceed for 75% of students in this class.

IV. Given the following data: 82, 93, 98, 89, 88 Find: a) Mean b) Mode c) Mean d) Sample and Population Standard Deviation e) Sample and Population Variance SHOW ALL WORK

Answer #1

1. for the given frequency distribution below
find the mean, median and standard deviation
X
f(X)
2
4
3
7
4
5
5
7
6
5
7
2
a) List the relative and cumulative relative
frequency for each interval the table above
2. Identify the level of the following
variables a. heights of male students b. the first three finisher
of a car race c. temperature in fahrenheit. d. the types of cars in
a parking lot
3. find the...

Data was collected for 364 randomly selected 10 minute
intervals. For each ten-minute interval, the number of people
entering the atrium of a large mall were recorded. The data is
summarized in the table below.
Number
of Guests
Frequency
220 – 239
83
240 – 259
95
260 – 279
47
280 – 299
43
300 – 319
96
What is the class width for this GFDT?
Class width =
The number of students in the tutoring center was recorded...

The number of sandwiches sold by a fast-food outlet for 15
consecutive days is given below.
19 14 25 17 29 24 36 23 9 26 22 31 19 28 8
2.1. Using the raw data, determine the range.
2.2. Group the data into a frequency distribution with a lowest
class lower limit of 8 and a class width of 7.
2.3. Determine the mean using the raw data.
2.4. Draw an OGIVE curve corresponding to the data and use...

The following data represent the number of grams of fat in
breakfast meals offered at McDonald’s. (Source: fueleconomy.gov).
12 22 27 3 25 30 32 37 27 31 11 16 21 32 22 46 51 55 59 16 36 30 9
24 a) Draw a stem-and-leaf plot of the data. Include appropriate
legend. b) What is the range of the data? c) What is the median of
the data? d) Describe the shape of the distribution. e) The median
is...

The following data shows the number of student suspensions from
a random sample of 40 local school districts in southwestern
Pennsylvania.
37 63 29 500 106 5 47 117 51 13 46 8 65 71 223 57 10 16 60 60 15 51
198 48 56 20 72 80 110 43 6 15 37 187 26 182 140 76 39 37
a) Find the sample mean, the median and the sample standard
deviation of this sample.
Sample mean = _________...

A sample of 15 students was tak
en and the average
number of hou
rs spent on
social media for recreational
purposes noted. The numbers are
29 30 25 36
33 21 33
40 31 19 16
32 23 32 34
a) Make a histogr
am of the data.
b) Make a stem and leaf plot.
c) Discuss modality and symmetry.
Identify gaps and suspected
outliers if any
exist.
d) Find the mean and
standard deviation.
e) Find the median...

A court administrator wants to examine burglary case disposition
times in his city. A random sample of 50 burglary cases disposed of
during the previous year is drawn. The numbers that follow
represent the number of days needed for each case:
70, 35, 86, 81, 63, 71, 58, 53, 99, 85, 64, 56, 17, 38, 94, 78,
101, 71, 63, 65, 58, 49, 88, 70, 51, 61, 80, 67, 53, 74, 73, 29,
64, 48, 98, 78, 67, 65, 76,...

The following data represent the number of games played in each
series of an annual tournament from 1924 to 2005.
Complete parts (a) through (d) below.
x (games played) Frequency
4 16
5 14
6 19
7 32
(a) Construct a discrete probability distribution for the
random variable x.
(b) Graph the discrete probability distribution. Choose the
correct graph below.
(c) Compute and interpret the mean of the random variable
x.
(d) Compute the standard deviation of the random variable...

QUESTION 1
·
1 POINT
The following frequency table summarizes a set of data. What is
the five-number summary?
Value
Frequency
2
3
3
2
5
1
6
3
7
1
8
2
11
3
Select the correct answer below:
Min
Q1
Median
Q3
Max
2
7
9
10
11
Min
Q1
Median
Q3
Max
2
3
6
8
11
Min
Q1
Median
Q3
Max
2
3
4
8
11
Min
Q1
Median
Q3
Max
2
6
8
10
11...

A sports magazine reports that the mean number of hot dogs sold
by hot dog vendors at a certain sporting event is equal to 150. A
random sample of 50 hot dog vendors was selected, and the mean
number of hot dogs sold by the vendors at the sporting event was
140. For samples of size 50, which of the following is true about
the sampling distribution of the sample mean number of hot dogs
sold by hot dog vendors...

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