Question 1160787: Q.No. 1
A. The amount (in PRs) that the customers deposited at a newly opened branch of national bank are:
12400 1400 15000 28900 5200 15600 20300 8200 2700 24800
3900 5200 10300 5800 13600 24900 11000 29800 25100 15700
18600 10700 14200 18500 7500 20200 11900 21900 15600 7800
11600 15200 20600 11700 5200 29900 5800 15300 21900 14800
14500 18700 16500 14700 15800 14600 18500 18600 14900 14000
a. Develop a box plot of the data values in the data set.
b. Is the data distribution skewed or symmetrical?
c. How many outliers are present in the data?
B. For the box plots below, estimate the values of:
a. the median M
b. the quartiles Q1 and Q3
c. the interquartile range IQR
d. the minimum and maximum values
e. the values of any outliers
Q.No. 2
A. Some people are in favor of reducing federal taxes to increase consumer spending and others are against it. Three persons are selected and their opinions are recorded. Assuming no one is undecided, list the possible outcomes.
B. A sample of 2,000 licensed drivers revealed the following number of speeding violations
a. What is the probability that a particular driver had exactly two speeding violations?
b. What is the probability that a particular driver had three or four violations?
C. What is the probability that a particular driver had three and four violations?
B. Sam is going to assemble a computer by himself. He has the choice of chips from two brands, a hard drive from four, memory from three, and an accessory bundle from five local stores. How many different ways can Sam order the parts?
C. The probability that an American industry will locate in Shanghai, China, is 0.7, the probability it will locate in Beijing, China, is 0.4, and the probability that it will locate in either Shanghai or Beijing or both is 0.8. What is the probability that the industry will locate
a. in both cities?
b. In neither city?
c. E. A random sample of 200 adults are classified below by gender and their level of education attained.
If a person is picked at random from this group, find the probability that
(a) the person is a male, given that the person has a secondary education;
(b) The person does not have a college degree, given that the person is a female.
Q.No. 3
A. A nationwide survey of college seniors by the University of Michigan revealed that almost 70% disapprove of daily pot smoking, according to a report in Parade. If 12 seniors are selected at random and asked their opinion, find the probability that the number who disapprove of smoking pot daily is
(a) Anywhere from 7 to 9;
(b) At most 5;
(c) Not less than 8.
B. The tensile strength of a certain metal component is normally distributed with a mean of 10,000 kilo- grams per square centimeter and a standard deviation of 100 kilograms per square centimeter. Measurements are recorded to the nearest 50 kilograms per square centimeter.
(a) What proportion of these components exceed 10,150 kilograms per square centimeter in tensile strength?
(b) If specifications require that all components have tensile strength between 9800 and 10,200 Kilograms per square centimeter inclusive, what proportion of pieces would we expect to scrap?
Answer by solver91311(24713)   (Show Source):
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