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3 years ago

14

The fish population in a local stream is decreasing at a rate of 5% per year. The original population was 75,000 fish. What is t

he population of the fish pond after 7 years?

1 answer:

ZanzabumX [31]3 years ago

4 0

Answer:

52,375

Step-by-step explanation:

that is what i got

You might be interested in

The heart rate of 10 adults is measured and the results are 83, 87, 90, 92, 93, 100, 104, 111, 115, 121. Find the interquartile

zloy xaker [14]

The interquartile range of the data set is 21.

Given that the heart rate of 10 adults is measured and the results are 83, 87, 90, 92, 93, 100, 104, 111, 115, 121.

The interquartile range shows the extent of the middle half of the distribution. Quartiles segment any distribution, ordered from low to high, into four equal parts. The interquartile range (IQR) contains the second and third interquartile ranges, the central half of the dataset.

The value of quartile 1 is Q₁=90

The value of quartile 3 is Q₃=111

So, the interquartile range is

IQR=Q₃-Q₁

IQR=111-90

IQR=21

Hence, the interquartile range of the data set 83, 87, 90, 92, 93, 100, 104, 111, 115, 121 is 21.

Learn more about the interquartile range from here brainly.com/qustion/18723655

#SPJ4

6 0

2 years ago

Use the normal distribution to find a confidence interval for a proportion p given the relevant sample results. Give the best po

Brrunno [24]

Answer: (0.63, 7.07)

Step-by-step explanation:

The confidence interval for population proportion is given by :-

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

Given : $\hat{p} =0.7$ ; $n=110$

Significance level : $1-0.90=0.1$

Critical value : $z_{\alpha/2}=1.645$

Now, a 90% confidence interval for population proportion will be :-

$0.7\pm (1.645)\sqrt{\dfrac{0.7(1-0.7)}{110}}\\\\\approx0.7\pm0.07\\\\=(0.7-0.07,0.7+0.07)=(0.63,\ 7.07)$

Hence, a 90% confidence interval for population proportion = (0.63, 7.07)

5 0

3 years ago

From the sum of -16 and -11, subtract the sum of -20 and 10

Vika [28.1K]

Answer:

-37

Step-by-step explanation:

-16+-11=-27

-20+10=-10

-27+-10=-37

5 0

2 years ago

What is the definition of function? Discuss the different ways of representing a function with examples of your own.

Scrat [10]

Function is a relation between sets that associates to every element of a first set exactly one element of the second set.

-Finding Input and Output Values of a Function.

-Evaluating Functions Expressed in Formulas.

-Evaluating a Function Given in Tabular Form.

-Finding Function Values from a Graph.

7 0

3 years ago

A group of people were given a personality test to determine if they were Type A or Type B. The results are shown in the table b

amm1812

Answer:

Option A: P(Male or Type B) > P(Male | Type B)

Step-by-step explanation:

Total Female = 85 type A, 12 type B ⇒ 97 Female.

Total Male = 65 type A, 38 type B ⇒ 103 Male

Total type A = 65 + 85 = 150

Total type B = 12 + 38 = 50

total number of people = 97 + 103 = 200

Then the probability would be:

P(Male | Type B) = $\frac{number of male in B}{total number of male}$

= $\frac{38}{103}$

= 0.368

P(Male or Type B) = $\frac{total number of male + (total number of people in B - total number of male in B)}{total number of male}$

= $\frac{103 + (50 - 38)}{200}$

= $\frac{103 + 12}{200}$

= $\frac{115}{200}$

= 0.575

Hence, P(Male or Type B) > P(Male | Type B)

5 0

3 years ago