<span>Ok. You would set up the problem like this: 32/x=64/100 and then cross multiply; 3200=64x; divide both sides by 64; x=50. Mary has 50 customers.</span>

6 0

3 years ago

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In a recent Super Bowl, a TV network predicted that 25 % of the audience would express an interest in seeing one of its forthcom

AleksAgata [21]

Answer:

The right solution is "-8.25".

Step-by-step explanation:

The given values are:

Sampled people,

n = 150

Null and alternative hypotheses will be:

$H_0:p=0.53$

$Ha:p\neq 0.53$

The z-statistics will be:

⇒ $z=\frac{\bar{p}-p_0}{\sqrt{\frac{p_0(1-p_0)}{n} } }$

On substituting the values, we get

⇒ $=\frac{0.2-0.53}{\sqrt{\frac{0.53(1-0.53)}{150} } }$

⇒ $=\frac{-0.33}{\sqrt{\frac{0.24}{150}} }$

⇒ $=\frac{-0.33}{0.04}$

⇒ $=-8.25$

7 0

3 years ago

Ronaldo will write 3/20 as a decimal which of the following methods should be use

Lapatulllka [165]

Answer:

Step-by-step explanation:

You haven’t provided the choice of methods!

Note that 3/20 can be scaled to a fraction that has a denominator of 100, making it easy to write the fraction as a decimal.

3/20 = 15/100 = 0.15

7 0

3 years ago

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