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NNADVOKAT [17]
3 years ago
12

Why was the baby any confused ?

Mathematics
1 answer:
AnnZ [28]3 years ago
7 0
I don't now because I don't speak English very will
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(CO 3) A survey indicates that shoppers spend an average of 22 minutes with a standard deviation of 8 minutes in your store and
padilas [110]

Answer: 0.60

Step-by-step explanation:

Given: Mean : \mu = 22\text{ minutes}

Standard deviation : \sigma = 8\text{ minutes}

The formula to calculate z is given by :-

z=\dfrac{x-\mu}{\sigma}

For x= 20 minutes

z=\dfrac{22-20}{8}=0.25

The P Value =P(z

Hence, the probability that a randomly selected shopper will spend less than 20 minutes in the store= 0.60

5 0
3 years ago
Which function is equivalent to Y=-cot(x)?<br>​
worty [1.4K]
I hope this helps you out

5 0
3 years ago
Trucks in a delivery fleet travel a mean of 120 miles per day with a standard deviation of 18 miles per day. The mileage per day
kvv77 [185]

The probability that a truck drives between 150 and 156 miles in a day is 0.0247. Using the standard normal distribution table, the required probability is calculated.

<h3>How to calculate the probability distribution?</h3>

The formula for calculating the probability distribution for a random variable X, Z-score is calculated. I.e.,

Z = (X - μ)/σ

Where X - random variable; μ - mean; σ - standard deviation;

Then the probability is calculated by P(Z < x), using the values from the distribution table.

<h3>Calculation:</h3>

The given data has the mean μ = 120 and the standard deviation σ = 18

Z- score for X =150:

Z = (150 - 120)/18

   = 1.67

Z - score for X = 156:

Z = (156 - 120)/18

  = 2

So, the probability distribution over these scores is

P(150 < X < 156) = P(1.67 < Z < 2)

⇒ P(Z < 2) - P(Z < 1.67)

From the standard distribution table,

P(Z < 2) = 0.97725 and P(Z < 1.67) = 0.95254

On substituting,

P(150 < X < 156) = 0.97725 - 0.95254 = 0.02471

Rounding off to four decimal places,

P(150 < X < 156) = 0.0247

Thus, the required probability is 0.0247.

Learn more about standard normal distribution here:

brainly.com/question/26822684

#SPJ1

5 0
1 year ago
2. What is the relative frequency of a student choosing the aquarium? Give your
Andreyy89

Answer:

What is the relative frequency of a student choosing the aquarium? Give your

answer as a decimal rounded to the nearest hundredth. (The hundreths place is two

decimal places. For example, .9543 would be rounded to .95)

Step-by-step explanation:

5 0
3 years ago
Which statement best explains whether △ABC is similar to △DEF?
Sati [7]

A). They are not similar, because 6/13 is not equal to 8/20

For triangles to be similar, the ratios of sides need to be the same (shortest to shortest, middle to middle, longest to longest). The shortest sides are 6 and 13, respectively, the middle ones are 8 and 20. Because 6/13 is not equal to 8/20, the triangles are not similar.

8 0
3 years ago
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