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3 years ago

2.2

Mathematics

1 answer:

Scorpion4ik [409]3 years ago

4 0

Answer:

my pfp

Step-by-step explanation:

the answer to everything is my pfp

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b. Find a 99% confidence interval for mean age of ICU patients using the facts that, in the sample, the mean is 57.55 years and

rjkz [21]

Answer:

99% of confidence intervals for mean age of ICU patients

(53.8920 , 61.2079)

Step-by-step explanation:

Explanation:-

Given sample mean $x^{-} = 57.55$

Given standard error is determined by

S.E = $\frac{S.D}{\sqrt{n} }$

Given data standard error = 1.42

99% of confidence intervals for mean is determined by

$(x^{-} - Z_{0.01} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.01} \frac{S.D}{\sqrt{n} } )$

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.01}{2} } = Z_{0.05} = 2.576$

$(x^{-} - 2.576 S.E , x^{-} + 2.576 S.E)$

$(57.55 - 2.576X 1.42 , 57.55+ 2.576 X1.42)$

(53.8920 , 61.2079)

Conclusion:-

99% of confidence intervals for mean is determined by

(53.8920 , 61.2079)

5 0

3 years ago

Below are two parallel lines with a third line intersecting them

ANTONII [103]

Answer:

x = 129

Step-by-step explanation:

x = 129 because of alternate interior angles

3 0

3 years ago

86) If 3 glasses of lemonade can be made from 8 lemons, exactly how

kkurt [141]

Answer:

37 and a 1/3

Step-by-step explanation:

3 glasses of lemonade=8lemons

1 glass of lemonade=2.66666667

14 glasses=37.33

you cannot have 37 and a 1/3

please give me brainliest!!

6 0

3 years ago

What is 4 1/3-(-2/3)

Delicious77 [7]

Answer:

It is 5

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

A man covers a distance of 150m in 1.5mins. Find the average speed in km per hour

sergiy2304 [10]

Answer:

6 Km / hour

Step-by-step explanation:

Convert distance to Km ( 1 Km = 1000 m )

150 m = 150 ÷ 1000 = 0.15 Km

Convert 1.5 mins to hours ( 1 hour = 60 minutes )

1.5 = 1.5 ÷ 60 = 0.025 hours

average speed = $\frac{distance}{time}$ = $\frac{0.15}{0.025}$ = 6 Km / hour

6 0

3 years ago