Question

2. A catalogue order desk has data claims that 44% of calls result in an order. Suppose an operator makes 8 calls, and the calls are made independently. a.) Find the probability of obtaining exactly 7 orders. b.) Find the probability of obtaining exactly 4 orders. c.) Find the probability of obtaining at least 6 orders d.) mean e.) standard deviation.

Answer #1

2.)A catalogue order desk has data claims that 44% of
calls result in an order . Suppose an operator makes 8 calls and
the calls are made independently.
Find the probability of obtaining exactly 7
orders
Find the probability of obtaining at most
orders
Find the probability of obtaining at least 6
orders
What is the mean?
What is the standard deviation ?

2. A catalogue order desk has a data claim that 73% of
calls result in an order. Suppose an operator makes 7 calls , and
the calls are made independently.
Find the probability of obtaining exactly 4
orders.
Find the probability of obtains at most 5
orders
Find the probability of obtains atleast 6
orders.
Find the mean
Find the standard deviation. P=.73 , n=7

Phone calls can be classified as voice (V) if someone is
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Based on many observations made by the telephone company, we have
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calls and voice calls are produced independently. The random
variable Kn is the number of data calls in a collection of n calls
telephone
(a) What is the E [K100], the expected number...

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When people order coffee at the counter, they will either order
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b.What is the probability that, among the next 10 customers, the
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The probability model below describes the number of repair calls
that an appliance repair shop may receive during an hour.
Repair Calls 0 1 2 3
Probability 0.2 0.3 0.4 0.1
On average, the shop receives 1.4 calls an hour, with a
standard deviation of 0.92 calls. Suppose that the appliance shop
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The mean number of repair...

(Using Excel)
A producer of computer aided design software has received
numerous calls for technical support. The company has a service
standard of 4 days for the mean resolution time for questions. The
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complaints about the resolution being too long. During
one week a sample of 40 customer calls result in a sample mean of
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1. Set up the hypothesis test? ...

Each time that a Martian egg hatches, there is a 43% chance
that the baby is female. Round to 4 decimal places.
a) If 25 eggs hatch, find the probability that exactly 10 are
female.
b) If 17 eggs hatch, find the expected number of female
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c) If 20 eggs hatch, find the probability that at least 9 babies
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e)
If...

2.1 The annual salaries of
employees in a large company are approximately normally
distributed with a mean of R50 000 and a standard deviation of R 20
000.
Calculate the percentage of employees who earn:
2.1.1 less than R40
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2.1.2 between R45 000 and R65
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1.)
A population of values has a normal distribution with μ=188.6and
σ=18.4 You intend to draw a random sample of size n=193
Find the probability that a single randomly selected value is less
than 188.1.
P(X < 188.1) =
Find the probability that a sample of size n=193 is randomly
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P(x¯ < 188.1) =
Enter your answers as numbers accurate to 4 decimal places.
2.)
Scores for a common standardized college aptitude test...

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