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[link] – [link] refer to the following study: A recent study of mothers of junior high school children in Santa Clara County reported that 76% of the mothers are employed in paid positions. Of those mothers who are employed, 64% work full-time (over 35 hours per week), and 36% work part-time. However, out of all of the mothers in the population, 49% work full-time. The population under study is made up of mothers of junior high school children in Santa Clara County.
Let employed, Let full-time employment
The type of employment is considered to be what type of data?
Qualitative
Find the probability that a randomly selected mother works part-time given that she is employed.
0.36
Find the probability that a randomly selected person from the population will be employed OR work full-time.
0.7636
Based upon the above information, are being employed AND working part-time:
[link] - [link] refer to the following: We randomly pick 10 mothers from the above population. We are interested in the number of the mothers that are employed. Let number of mothers that are employed.
We expect the Statistics Discussion Board to have, on average, 14 questions posted to it per week. We are interested in the number of questions posted to it per day.
A person invests $1000 in stock of a company that hopes to go public in 1 year.
Find the expected PROFIT after 1 year.
$150
Rachel’s piano cost $3000. The average cost for a piano is $4000 with a standard deviation of $2500. Becca’s guitar cost $550. The average cost for a guitar is $500 with a standard deviation of $200.Matt’s drums cost $600. The average cost for drums is $700 with a standard deviation of $100. Whose cost was lowest when compared to his or her own instrument? Justify your answer.
Matt
For each statement below, explain why each is either true or false.
[link] –
[link] refer to the following: 64 faculty members were asked the number of cars they owned (including spouse and children’s cars). The results are given in the following graph:
Find the first, second and third quartiles. Use them to construct a box plot of the data.
[link] – [link] refer to the following study done of the Girls soccer team “Snow Leopards”:
| Hair Style | Hair Color | ||
| blond | brown | black | |
| ponytail | 3 | 2 | 5 |
| plain | 2 | 2 | 1 |
Find the probability that the girl has black hair GIVEN that she wears a ponytail.
Find the probability that the girl wears her hair plain OR has brown hair.
Find the probability that the girl has blond hair AND that she wears her hair plain.
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