3 years ago

HELP ME FOR BRIANETEST

Mathematics

1 answer:

Nataliya [291]3 years ago

8 0

As indicated on the number line 1/3 is the same as 2/6 so we get

Answer: 2/6 + 5/6 = 7/6

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If May was going to the prom and asked out 98 boys to go to the prom with her and 50% of the boys touched held her hand, made ey

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A population is estimated to have a standard deviation of 9. We want to estimate the population mean within 2, with a 99% level

cupoosta [38]

Answer:

The sample required is $n = 135$

Step-by-step explanation:

From the question we are told that

The standard deviation is $\sigma = 9$

The margin of error is $E = 2$

Given that the confidence level is 99% then the level of significance is mathematically evaluated as

$\alpha = 100-99$

$\alpha = 1 \%$

$\alpha = 0.01$

Next we will obtain the critical value $\frac{\alpha }{2}$ from the normal distribution table(reference math dot armstrong dot edu) , the value is

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.05 }{2} } = 2.58$

The sample size is mathematically represented as

$n = [ \frac{Z_{\frac{\alpha }{2} } * \sigma }{E} ]^2$

substituting values

$n = [ \frac{ 2.58 * 9 }{2} ]^2$

$n = 135$

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2 years ago

A card is selected at random from a standard deck of 52 playing cards. What is the probability that it is NOT a face card?

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4/13

Step-by-step explanation:

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Brainliest for correct answer

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Step-by-step explanation:

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What is the common ratio for 128, 96, 72, 54,....

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Step-by-step explanation:

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