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inna [77]
2 years ago
12

PLEASE SOMEBODY HELP MEEEE

Mathematics
2 answers:
Tems11 [23]2 years ago
4 0
Is it just z=2, or 3, 4, or any number 10 and less?
andreyandreev [35.5K]2 years ago
3 0
That's an equal to or less then sign so 10 or anything below should be correct
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Will walked 5 miles to school. He walked 7 miles back home because he took the long way. How many miles dis he walk in all?
4vir4ik [10]

12? pretty simple. i believe so

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You worked from 8:30am - 2:15pm with a 12 hour lunch break. How long did you work?
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What is 6 4/5 + 7 4/5
MrMuchimi

Answer:

14 3/5

Step-by-step explanation:

The way is simple add 4/5 and 4/5 together to get 1 4/5 then add 6 +7=13 then add 13 + 1 4/5 to get 14 3/5

mark me brainliest plz would make my day

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The sodium content of a popular sports drink is listed as 200 mg in a 32-oz bottle. Analysis of 20 bottles indicates a sample me
julia-pushkina [17]

Answer:

The sample does not contradicts the manufacturer's claim.

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = 200 mg

Sample mean, \bar{x} = 211.5 mg

Sample size, n = 20

Alpha, α = 0.05

Sample standard deviation, s = 18.5 mg

a) First, we design the null and the alternate hypothesis  for a two tailed test

H_{0}: \mu = 200\\H_A: \mu \neq 200

We use Two-tailed t test to perform this hypothesis.

b) Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} } Putting all the values, we have

t_{stat} = \displaystyle\frac{211.5 - 200}{\frac{18.5}{\sqrt{20}} } = 2.7799

c) Now,

t_{critical} \text{ at 0.05 level of significance, 19 degree of freedom } = \pm 2.0930

Since, the calculated t-statistic does not lie in the range of the acceptance region(-2.0930,2.0930), we reject the null hypothesis.

Thus, the sample does not contradicts the manufacturer's claim.

d) P-value = 0.011934

Since the p-value is less than the significance level, we reject the null hypothesis and accept the alternate hypothesis.

Yes, both approach the critical value and the p-value approach gave the same results.

4 0
3 years ago
A car leaves Albany, NY, and travels west toward Buffalo, NY. The equation D =280-59t can be used to represent the distance, D,
Ivanshal [37]

Answer:

the number of miles per hour

Step-by-step explanation:

5 0
3 years ago
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