Write the binomial probability function

Reference no: EM13760475

9. A number of individuals were asked how many e-mails that they sent per day. The results are summarized in the following grouped frequency distribution.
Emails (per day) Frequency
8 - 12 3
13 - 17 34
18 - 22 31
23 - 27 8
28 - 32 27

a) How many emails were sent?
b) Approximate the mean weight.
c) Determine the class width.
d) Determine the boundaries of the class 18 - 22.
e) Determine the midpoint of each class and use the midpoint to estimate the standard deviation of the frequency distribution.

10. Binomial Distribution -

A. A restaurant has found that about 20% of the diners with reservations do not show up. Suppose that 12 reservations parties are made.

a) Write the binomial probability function for this experiment.

b) Calculate the binomial coefficient then calculate the probability that exactly 4 of the reservation parties show up. Would we expect this probability to be large or small? Why?

c) If the manager wishes to determine how the probability that three or more will show up, what probabilities need to be added? (Do not calculate)

d) Find the mean of this binomial distribution and explain what this number tells us in this context.

Reference no: EM13760475

Questions Cloud

Enterprise impact and measurement of business intelligence : Write a summary of the discussion your team had about enterprise impact and measurement of business intelligence.

What are some key intellectual property protections : What are some key intellectual property protections, if any, that your company possesses. When do these protections (e.g., patents) expire. How does your company intend to recoup lost revenues due to any patent or other intellectual property prote..

Prove that y(t) is a poison process with parameter ?p : Let {X(t), t ≥ 0} be a Poisson process with intensity parameter λ. Suppose each arrival is "registered" with probability p, independent of other arrivals. Let {Y(t), t ≥ 0} be the process of "registered" arrivals. Prove that Y(t) is a Poisson process..

Each natural number n : 1)Show that, for each natural number n, the function f_n(x) = x^(1/n) has derivative f_n ' (x) = 1/n x ^ (1/n - 1) for x not equal to 0.2)Show that, for each real number b>0, the function f(x) = b^x (defined by b^x = sup{b^r, r rational, r

Write the binomial probability function : A. A restaurant has found that about 20% of the diners with reservations do not show up. Suppose that 12 reservations parties are made. a) Write the binomial probability function for this experiment.

The plurality method which states : Talk about a real-world example using the Plurality Method which states that the candidate with the most first-place votes wins the election, to decide an election.

The total weight of bean : The beans are selling for $0.80, $1.20, and $1.80 per pound. You want to know how much of each grade of bean to buy, based on the following assumptions given to you by the owner: The total weight of beans needed is 15,000 pounds to minimize shippi..

A homogeneous poisson process with parameter : Let X(t) be a homogeneous Poisson process with parameter λ. Determine the covariance between X(t) and X(t + τ), t>0 and τ >0, i.e., compute E[(X(t) -E(X(t))(X(t + τ) - EX(t + τ))].

Determine which of the above processes : Let {X(t), t ≥ 0} and {Y(t),t ≥ 0} be independent Poisson processes with parameters λ1 and λ2, respectively. Define Z1(t) = X(t) + Y(t), Z2(t) = X(t) - Y(t), Z3(t) = X(t) + k, k a positive integer. Determine which of the above processes are Poisson a..

User Account

All Pages