EBook

Mathematics

1 answer:

77julia77 [94]3 years ago

4 0

Answer:

Probability =0.9898

Step-by-step explanation:

Given that, mean = 4 = 300 standard deviation = 70 n = 100 PT = H = 128 oT = 0 / V n = 70/ v 100 = 7 a) within 6 = 300 ±6 = 294, 306 P(294< ī < 306) = P[(294 - 300) 7 < (ĩ -H ï) / o ĩ < (306 300) /7)] = P(-0.86 < Z < 0.86) = P(Z < 0.86) - P(Z < -0.86) Using z table, 0.8051 - 0.1949 %3D %3D %3D = 0.6102 Probability = 0.6102 a) within 18 = 300 t 18 = 294, 318 P(294< ī < 306) = P[(282 - 300) / 7< (ã -H i) / oī< (318 - 300) /7)] = P(-2.57 < Z< 2.57) = P(Z < 2.57) - P(Z < -2.57) Using z table, =0.9949 - 0.0051 =0.9898 Probability =0.9898

You might be interested in

PLEASE HELP!!! WILL MARK BRAINLIEST!!!

lara31 [8.8K]

Answer:

5n - 119

Step-by-step explanation:

First, we notice that the sequence is going up by 5, so we could rule out 2 answers: -5n - 109, and -5n -119 (They go by -5). Then all we have to find is the constant, -119 or -109. Well we could rule out -109 because -114 is included in the sequence, and if we start by -109 and start counting up, we will never get to -114. So, the solution is 5n - 119

5 0

3 years ago

If you share 7 apples equally with 3 people then there are 2 1/3. Frost complete the sentence. Then , briefly explain what the w

8090 [49]

Answer:

The whole number 2 is the number of whole apples each person gets. The numerator 1 is the number of pieces of the remaining apple each person gets; the denominator 3 is the number of pieces the remaining apple is cut into.

8 0

3 years ago

In his first 64 games, Sasha hit 48 home runs. If he continues at that rate, how many home runs will Sasha hit in his next 272 g

telo118 [61]

Answer:

Step-by-step explanation:

272/64 = 4.25

4.25*48 = 204

8 0

3 years ago

HELP ME OUT ASAP PLS 20POINTS IF U DO! On Friday, a bowling alley made $842.72 from lane rentals and $412.38 from the concession

ElenaW [278]

Answer:

$2611.05

Step-by-step explanation:

earnings = lane rentals + concessions

<u>Friday</u>:

earnings = $842.72 +412.38 = $1255.10

<u>Saturday</u>:

We assume "down by 1/8" means the value was 1 -1/8 = 7/8 that of the previous day. Likewise, "increased by 1/2" is assumed to mean the value was 1 + 1/2 = 3/2 that of the previous day.

earnings = 7/8×$842.72 + 3/2×412.38 = $1355.95

Then the total earnings for both days were ...

$1255.10 +$1355.95 = $2611.05

7 0

3 years ago

Read 2 more answers

Which expression is equivalent to x6 - 16x^2?

Mrac [35]

Answer:

$x^2(x - 2)(x + 2)(x^2 + 4)$