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Elden [556K]
3 years ago
10

What does a star mean after a number

Mathematics
2 answers:
Triss [41]3 years ago
8 0
A star is written to show multiplication. It is a replacement for a dot or a x which is what you probably learned to be the "times" sign. In upper level maths, the "x" is replaced with a " * " to make it more legible and to avoid confusion with the variable "x".
zaharov [31]3 years ago
4 0
A star after a number means multiply.
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A supervisor finds the mean number of miles that the employees in a department live from work. He finds x Overbar = 29 and s = 3
podryga [215]

The correct option is (B).24 miles.

Z-score is basically another term for the specific number of standard deviations. I suppose we can assume normality here, even though it isn't given, so I'd make a rough sketch.

Otherwise, just use the basic formula:

z_{score} =\dfrac{x-\mu}{\sigma}

 Given that,

\bar{x}=29 (statistic for a mean) and s=3.6 (statistic for a standard deviation).

Since z-score must be Less than 1.5, So

1.5> \dfrac{x-29}{3.6}\\

1.5 \times3.6 > x-29\\5.4+29> x\\34.4> x

I just used normal cdf and got 23.6.

Hence the correct option is (B).24 miles.

For more details on z score follow the link:

brainly.com/question/13299273

 

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Step-by-step explanation:

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