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3 years ago

PLZ HELP IF WRONG ILL REPORT

2 answers:

7 0

I HONESTLY WOULD THINK THIS COULD BE BIAS ONLY BECAUSE DIFFERENT OPINION ARE INCLUDED BUT AT THE SAME TIME BESTBUY NEVER SAID ANYTHING ABIUT THEM HATING BESTBUY

kvv77 [185]3 years ago

6 0

Answer:

The store calls and asks every 4th person who bought a television within the past year whether he or she likes it.

<u>It is biased because opinion was shared..</u>

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The amount of time people spend exercising in a given week follows a normal distribution with a mean of 3.8 hours per week and a

Travka [436]

Answer:

i and iii) In the figure attached part a we have the illustration for the area required for the probability of less than 2 hours and in b the illustration for the probability that X would be between 2 and 4

ii) $P(X$

And using the normal standard table or excel we got:

$P(z$

iv) $P(2$

And we can find the probability with the following difference and usint the normal standard distirbution or excel and we got:

$P(-2.25$

Step-by-step explanation:

Let X the random variable that represent amount of time people spend exercising in a given week, and for this case we know the distribution for X is given by:

$X \sim N(3.8,0.8)$

Where $\mu=3.8$ and $\sigma=0.8$

Part i and iii

In the figure attached part a we have the illustration for the area required for the probability of less than 2 hours and in b the illustration for the probability that X would be between 2 and 4

Part ii

We are interested on this probability:

$P(X$

We can use the z score formula given by:

$z=\frac{x-\mu}{\sigma}$

Using this formula we have:

$P(X$

And using the normal standard table or excel we got:

$P(z$

Part iv

We want this probability:

$P(2$

Using the z score formula we got:

$P(2$

And we can find the probability with the following difference and usint the normal standard distirbution or excel and we got:

$P(-2.25$

3 0

4 years ago

katy paid 23 dollars to have her haircut.she left a 20% tip. Then she bought shampoo for $6. what was the total amount that she

murzikaleks [220]

Answer$33.60

Step-by-step explanation:

First I added 23 and 6 to get $29

Then I figured out that 20 percent of 23 was 4.6 and added that to 29.

I came out with an answer of 33 dollar and sixty cents.

4 0

4 years ago

The graph of the function f(x) is shown

Softa [21]

Answer:

where is the graph

and what is your question

could you explain

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3 years ago

Least to greatest √5,-2.1,0.5,-0.5,5/100

Sladkaya [172]

Answer: -2.1, -0.5, 5/100, 0.5, √5

Step-by-step explanation:

Start with the negative numbers. Take the absolute value - the ones with the largest absolute value are the farthest from 0, so they are the smallest numbers.

-2.1, -0.5

Then, convert the numbers not in decimals to decimals.

5/100 = 0.05

√5 is about 2.3.

5/100, 0.5, √5

6 0

4 years ago

HELP PLEASE!!

Gnom [1K]

Answer: $50 withdrawl $50 withdrawl and $65 deposite

Step-by-step : $50 withdrawl $50 withdrawl and $65 deposite

7 0

3 years ago