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Mathematics

1 answer:

KatRina [158]2 years ago

6 0

Answer:

volume of figure = 74 cm³

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Jane and her friend Maria both invest in the stock market. The probability that Jane makes money in a given week is .6. The prob

tatiyna

Answer:

Step-by-step explanation:

Probability is the ratio of the number of possible outcome to the number of total outcome.

Given that the probability that Jane makes money in a given week is .6 and the probability that Jane and Maria both make money in a given week is .48. Then the probability that Maria makes money in a given week...

Let the probability that Jane makes money in a given week be p(j) and that Maria makes money in a week be p(m) then

p(j) = .6 and

p(j) * p(m) = .48

.6 * p(m) = .48

p(m) = .48/.6

= .8

5 0

2 years ago

Which pair of ratios is proportional? A. 5:7 and 25:35 B. 6:9 and 18:36 C. 9:18 and 16:36 D. 35:120 and 75:250

Agata [3.3K]

One way is to make into fracitons and simplify

A.5/7=25/35?
yes, true

B. 6/9=18/36?
no

C. 9/18=16/36?
no

D. 35/120=75/250?
no

another way is
if a/b=c/d, then (ad)/(bc)=1 or ad=bc

A is answer

6 0

2 years ago

Suppose you take an SRS of size 1000 of Connecticut students eligible to take the SAT and find that 85% plan to take the SAT dur

nadezda [96]

Answer:

$\mu_{p}=p=0.81$

Step-by-step explanation:

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$