Find an answer to any high school probability and statistics problem - PlainMath

Recent questions in Statistics and Probability

Binomial probability

asked 2021-10-19

There is a water in two tank, tank a&b. The volume of tank a and b is 4:3. When 0.8 liter of water is added to tank A, there is twice much more water in tank A than tank b. When tank A is filled completely, it is 1/4 of tank b, how much more water to fill tank b to its rim?

Normal distributions

asked 2021-10-18

A flowerpot accidentally falls off the window of a condominium unit. Your unit is located below where the flowerpot had fallen. Your window measures to be 1.60 m tall, and the time it takes the flowerpot to move past your window is 0.150 s (from the top part to the bottom part of the window). How high from the top of your window did the flowerpot fell off?

Data distributions

ANSWERED

asked 2021-10-04

z-scores can be used to identify ?, ?, ? values.

Data distributions

ANSWERED

asked 2021-10-04

Explain TWO strengths in using mean as a measure of central tendency.

ANSWERED

asked 2021-10-03

Make a scatterplot of the data. Use 87 for 1987.

\(\begin{array}{|c|c|}\hline \text { Year } & {\text { Sales }} \ & {\text { (millions of dollars) }} \\ \hline 1987 & {300} \\ \hline 1988 & {345} \\ \hline 1989 & {397} \\ \hline 1990 & {457}\ \\ \hline 1991 & {510} \\ \hline 1992 & {587} \\ \hline 1993 & {664} \\ \hline 1994 & {700} \\ \hline 1995 & {770} \\ \hline 1996 & {792} \\ \hline 1997 & {830} \\ \hline 1998 & {872} \\ \hline 1999 & {915} \\ \hline\end{array}\)

Data distributions

ANSWERED

asked 2021-10-02

The one figure you would request from the given three figures if you are applying for an entry-level job at the large firm and informed of the mean, or mode salary.

Binomial probability

ANSWERED

asked 2021-10-02

In a family of 6 children, what is the probability of getting exactly 5 boys?

Binomial probability

ANSWERED

asked 2021-10-02

In a poll men and women were asked"When someone yelled or snapped at you at work, how did you want to respond Twenty percent of the women in the survey said that they felt like crying (TimeApril 4, 2011) Suppose that this result is true for the current population of women employees. Arandom sample of 24 women employees is selectedUse the binomial probabilities table or technology to find the probability that the number of women employees in this sample of 24 who will hold the above opinion in response to the said question is

Binomial probability

ANSWERED

asked 2021-10-02

X denotes a binomial random variable with parameters n and p, Indicate which area under the appropriate normal curve would be determined to approximate the specified binomial probability.
\(\displaystyle{P}{\left({X}≥{8}\right)}\)

Binomial probability

ANSWERED

asked 2021-10-02

X denotes a binomial random variable with parameters n and p. For each exercise, indicate which area under the appropriate normal curve would be determined to approximate the specified binomial probability.
\(\displaystyle{P}{\left({X}={6}\right)}\)

Binomial probability

ANSWERED

asked 2021-10-02

After being rejected for employment, Kim Kelly learns that the Bellevue Credit Company has hired only two women among the last 19 new employees. She also learns that the pool of applicants is very large, with an approximately equal number of qualified men as qualified women.
Help her address the charge of gender discrimination by finding the probability of getting two or fewer women when 19 people are hired, assuming that there is no discrimination based on gender.
(Report answer accurate to 8 decimal places).

High school probability

ANSWERED

asked 2021-10-02

Assume the random variable X has a binomial distribution with the given probability of obtaining a success. Find the following probability, given the number of trials and the probability of obtaining a success . Round your answer to four decimal places. \(\displaystyle{P}{\left({X}{<}{4}\right)},{n}={6},{p}={0.4}\)

Binomial probability

ANSWERED

asked 2021-10-02

Suppose that the New England Colonials baseball team is equally likely to win a game as not win it. If 4 Colonials games are chosen at random, what is the probability that exactly 3 of those games are won by the Colonials?
Round your response to at least three decimal places. (If necessary, consult a list of formulas.)

Binomial probability

ANSWERED

asked 2021-10-02

If X is a binomial random variable, for what value of \(\displaystyle\theta\) is the probability b(x; n, \(\displaystyle\theta\) ) a maximum?

Binomial probability

ANSWERED

asked 2021-10-02

a) To verify that the Rams' computer system manager statement that the odds against losing straight tosses are 2047 to 1 is correct or not.
b) To find the probability that the Rams lost the call for the next two games, for a total of 13 straight losses.

Binomial probability

ANSWERED

asked 2021-10-02

To match: The binomial probability statement with its corresponding normal distribution probability statement (a)-(d) after a continuity correction.

Binomial probability

ANSWERED

asked 2021-10-02

When Julia is writing a first draft, there is 0.7 probability that there will be no spelling mistakes on a page. One day, Julia writes a first draft that is 4 pages long.
Assuming that Julia is equally likely to have a spelling mistake on each of the 4 pages, what is the probability that she will have no spelling mistakes on at least one of them?
P(at least one without mistakes)=_

Binomial probability

ANSWERED

asked 2021-10-02

To explain the pros and cons of binomial probability tables.

Binomial probability

ANSWERED

asked 2021-10-02

What are the 6 criteria for the Binomial Probability and which four pertain only to the Binomial?

Binomial probability

ANSWERED

asked 2021-10-01

For a binomial distribution mean is 6 and variance is 2. Find the \(\displaystyle{P}{\left({X}={4}\right)}\).
a) 0.1024
b) 0.0012
c) 0.1768
d) 0.1345
e) 0.8976

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