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lozanna [386]
4 years ago
15

The mean of the data set is 15. What is number is missing. 18, 16, ___, 9, 12, 23

Mathematics
2 answers:
andrey2020 [161]4 years ago
8 0
Answer should be 10.

Hope it helped you.
kicyunya [14]4 years ago
3 0
The answer to the question is 10
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How many whole numbers are there with not more than 4 digits?
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I think its 1000 numbers because there from 1 to 999 there are 999 numbers, and then you add zero because it is also a whole number. 
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Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bill Alther.† Suppose a small group of 10 Allen's hummingb
ruslelena [56]

Answer: provided in the explanation segment

Step-by-step explanation:

(a). from the question, we can see that since that б is known, we can use standard normal, z.

we are asked to find an 80% confidence interval for the average weights of Allen's hummingbirds in the study region. What is the margin of error?

⇒ 80% confidence interval for the average weight of Allen's hummingbirds is given thus;

x ± z * б / √m

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3.15 ± 1.28 * 0.32/√10

= 3.15 ± 0.1295 = 3.0205 or 3.2795

(b). normal distribution of weight (c) б is known

(c). option (a) and (e) are correct

(d).  from the question, let sample size be given as S

this gives';

1.28 * 0.32/√S = 0.15

√S = (1.28 * 0.32) / 0.15 = 2.73

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6 0
3 years ago
Solve 1.25x + 1.50y = 28.25.
fiasKO [112]

To find the x-intercept, substitute in

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and solve for

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. To find the y-intercept, substitute in

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4 0
3 years ago
(3)-2<br> Evaluate exponent
olga nikolaevna [1]

Answer:

3^{-2} = \dfrac{1}{9}

Step-by-step explanation:

Definition of negative exponent:

a^{-n} = \dfrac{1}{a^n}

In our case, a = 3 and -n = -2.

3^{-2} = \dfrac{1}{3^2}

Now we just evaluate the power in the denominator.

3^{-2} = \dfrac{1}{3^2} = \dfrac{1}{9}

7 0
3 years ago
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