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Firlakuza [10]
3 years ago
8

if a sample size 40 is drawn from the population that has mean 276 and a variance of 81, what is the probability that the mean o

f the sample will be less than 273?
Mathematics
1 answer:
lapo4ka [179]3 years ago
4 0

Answer:

The probability is 0.017429

Step-by-step explanation:

We start by calculating the z-score

Mathematically;

z-score = (x-mean)/SD/√n

In this case;

x = 273

mean = 276

SD = √(variance) = √81 = 9

n = 40

Substituting these values into the z-score formula, we have that;

z = (273-276)/9/√40

z = -2.11

So we proceed to get the probability

the probability in this case is;

P( z < -2.11)

We can use the normal distribution table for this

Our answer will be

P( z < -2.11) = 0.017429

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Gala2k [10]

Answer:

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Step-by-step explanation:

7 0
2 years ago
You are making fruit baskets using 54 apples, 36 oranges, and 73 bananas. a. Explain why you cannot make identical fruit baskets
GrogVix [38]
Question 1:
73 is a prime number. It can only be divided by 1 and by itself. 

The GCF of the three numbers:
 54                               36                            73
1×54                           1×36                          1×73
2×27                          2×18
3×18                           3×12
6×9                            4×9
                                   6×6

GCF of 54, 36 and 73  is 1

GCF of 54 and 36 is 18

If we divide 54 apples into 18 baskets, we have 3 apples in each basket
If we divide 36 oranges into 18 baskets, we have 2 oranges in each basket
If we divide 73 bananas into 18 baskets, we have 4 bananas in each basket + one banana left over.

So the greatest number of identical fruit baskets we can make with the least amount of fruit left over is 18 baskets
6 0
3 years ago
Answer correctly please ASAP!
Serggg [28]

10 1/2 ft=2x-18 in

convert ft to in--10 1/2ft=126 in

126=2x-18

2x=144

x=<em>72 inches or 6 feet</em>

5 0
3 years ago
I need help with this because I'm not very good at understanding this.
HACTEHA [7]

Answer:

the initial value is 2

Step-by-step explanation:

"y=mx+b" is the equation

"b" is the initial value, and there is no "b" value

4 0
2 years ago
Perform the indicated operation.
Verizon [17]

Answer:

The answer is B. 298? im not sure if it was supposed to be ≈ or not

6 0
3 years ago
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