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3 years ago

Please help! You don’t have to explain how you got the answer! Tysm.

Mathematics

1 answer:

alexgriva [62]3 years ago

8 0

1.) .777777778
2.) .8
3.) .6
4.) .285714286
5.) .15

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The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club. She would now like to det

Maru [420]

Answer:

0.077994

Step-by-step explanation:

Given that the owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club.

$H_0: Mean = 30\\H_a: Mean >30$

(Right tailed test)

Sample size = $n=250$

Sample mean = 30.45

Mean difference = $30.45-30=0.45\\$

Sample std dev s = 5

Sample std error = $\frac{5}{\sqrt{n} } =\frac{5}{\sqrt{250} } \\=0.3163$

Test statistic = Mean diff/std error = $=\frac{0.45}{0.3163} =1.423$

Since population std deviation is not know we use t test

p value = $0.077994$

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3 years ago

What is the area of a circle with a radius of 3 meters using 3.14 for pie

Scorpion4ik [409]

Wah..I need to ask my bro to answer this.. Brb

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3 years ago

owen has a collection of nickels and quarters worth $8.10. If the nickels were quarters and the quarters were nickels, the value

prisoha [69]

There are 67 nickels and 19 quarters.Im pretty sure

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3 years ago

Reposting this because no body gave me the equation. An equation would be appreciated :)

o-na [289]

bring the like terms together,

$\frac{6q}{5} + \frac{4q}{5} \leqslant 28 + 3 + 3 - 3$

$\frac{10q}{5} \leqslant 31$

$2q \leqslant 31$

$q \leqslant \frac{31}{2}$

3 0

3 years ago

Read 2 more answers

Divide x4+2x2−24<br> by x+2

Ipatiy [6.2K]

$\begin{array}{c|c}_{-}\ x^4+2x^2-24 &\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\! \underline{ x+2 } \\ \!\!\!\!\!\!\!\!\!\!\! \underline{x^4+2x^3}& x^3-2x^2+4x-8 \\{ \big{_{-}}}-2x^3-24& \\\underline{-2x^3-4x^2}& \\ _{-} \ 4x^2-24 & \\ \underline{4x^2+8x}& \\ _{-}-8x-24& \\ \underline{-8x-16} & \\ -8 &\end {array }$

$\displaystyle \frac{x^4+2x^2-24}{x+2} =x^3-2x^2+4x-8 -\frac{8}{x+2}$

7 0

3 years ago

Read 2 more answers