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3 years ago

PLEASE HELP ASAP I AM TIMED NO GUESSING THANK YOUUU' 4)

Mathematics

1 answer:

Katyanochek1 [597]3 years ago

3 0

$P(F|E)=\dfrac{P(F\cap E)}{P(E)}=\dfrac{0.17}{0.24}\approx\boxed{0.71}$

Answer C.

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Can someone please explain how to find x and y I don’t understand this at all

Sloan [31]

3y is the supplement of 141 so that means 3y+140=180 so y is 13.33. Since they give you 68, 68+13.33+x=180. So 81.33+x=180 and x=98.66.

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3 years ago

A researcher took a random sample of 100 students from a large university. She computed a 95% confidence interval to estimate th

katen-ka-za [31]

Answer:

Part (A): The correct option is true.

Part (B): The null and alternative hypothesis should be:

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Step-by-step explanation:

Consider the provided information.

Part (A)

A random sample of 100 students from a large university.

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If the researcher increase the sample size to 150 which is greater than 100 that will decrease the confidence intervals or the researcher could produce a narrower confidence interval.

Hence, the correct option is true.

Part (B)

The researcher wants to identify that whether there is any significant difference between the measurement of the blood pressure.

Therefore, the null and alternative hypothesis should be:

$H_o: \mu =0 ; H_a:\mu \neq0$

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3 years ago

Tom's mark of a maths test was 68.This was 20% worse than his mark in English.what was Tom's English mark ?

Shkiper50 [21]

98 would be his english mark

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3 years ago

CAN SOME ONE PLEASE ANSWER THIS RIGHT THANK YOU

Galina-37 [17]

Answer:

2:A number is greater than 17.2

Step-by-step explanation:

the ">" in the inequality represents is greater

so the m> means m is greater than... and then the 17.2 means m is greater than 17.2. The way I learnt it was to imagine the ">" sign is like a crocodile, it wants the bigger number. So the ">" being towards the "m" shows that m is the bigger number.

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2 years ago

Read 2 more answers

Original price: $50; markdown: 2.2%; retail price:

larisa86 [58]

$50x2.2%
50x0.022=1.1
$50-$1.1=$48.9

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3 years ago