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4 years ago

The doctor also ordered measurement of wally's na+ and k+ levels. how is the adrenal gland related to these?

1 answer:

8 0

<span>The adrenal gland produces a hormone called aldosterone. Without this hormone, Na+ cannot be reabsorbed from the urine, and K+ cannot be secreted into it. K+ will build up in the blood, and Na+ will be lost in the urine.</span>

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4 years ago

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3 years ago

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3 years ago

A geneticist claims that four species of fruit flies should appear in the ratio

Gemiola [76]

There are sufficient evidences which are of 5% significance level to reject the claim.

<h3>What is chi-square test?</h3>

A statistical test used to compare observed results with expected results is referred to as the chi-square test.

According to the given scenario,

Ratio = 1:3:3:9
Sample size = 2000
Samples = 110, 345, 360, and 1185

To calculate:

Evidence to make conclusion to the geneticist's claim.

Total fruits = 1 + 3 + 3 + 9 = 16

As per the expected number of fruit flies

Each species = 1/16(2000) = 125.3/16(2000) = 375.3/16(2000) = 375.9/16(2000)

Each species = 1125

According to Chi-Square test -

$X^{2} =\epsilon\frac{(O_{i}-E_{i})^{2} }{E_{i}}$

$X^{2}$ = ( 110 - 125)²/125 + ( 345 - 375)²/375 + ( 360 - 375)²/375 + ( 1185 - 1125)²/1125

$X^{2}$ = (15)²/125 + (30)²/375 + (15)²/375 + (60)²/1125

$X^{2}$ = 8

with df = 4 - 1 = 3, and P( x² > 8) = 0.0460.

Thus, with a P-value, it is small, indicates 5% significance level to reject the claim.

For more details regarding the chi-square test, visit:

brainly.com/question/14082240

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2 years ago

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andre [41]

Answer:

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Explanation:

hope it helps

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3 years ago