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3 years ago

Is my answer choice correct?

Mathematics

2 answers:

stich3 [128]3 years ago

8 0

Answer:

yes it is

Step-by-step explanation:

klemol [59]3 years ago

4 0

Answer:

Yes it is correct

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he response times for a random sample of 40 medical emergencies were tabulated. The sample mean is 13.25 minutes. The population

Gwar [14]

Answer:

The calculated value Z = 2.5 > 1.96 at 0.05 level of significance

The null hypothesis is rejected

The Alternative hypothesis is rejected

The EMS director wants to service goal of 12 minutes or less is being achieved

Step-by-step explanation:

Step(i):-

Given that the size of the random sample = 40

Given that the mean of the sample (x ⁻) = 13.25

Given that the standard deviation of the Population = 3.2 minutes

Level of significance = 0.05

The mean of the Population (μ) = 12

Step(ii):-

Null hypothesis:-H₀: (μ) = 12

Alternative Hypothesis: H₁ : μ < 12

Test statistic

$Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{13.25-12 }{\frac{3.2}{\sqrt{40} } }$

Z = 2.5

The tabulated value Z₀.₀₅ = 1.96

The calculated value Z = 2.5 > 1.96 at 0.05 level of significance

The null hypothesis is rejected

The Alternative hypothesis is rejected

Final answer:-

The EMS director wants to service goal of 12 minutes or less is being achieved

3 0

3 years ago

Need help please! (Will mark as Brainliest)

Bad White [126]

Answer:

nun of thease

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

I dont get this please help.

madam [21]

40 out of 250 students speak French: 40 / 250 = 0.16

Multiply the number of students surveyed by 0.16:

30 x 0.16 = 4.8

Round up to 5 students.

Answer 5 students

3 0

3 years ago

How do you find the surface area of a triangular prism using it's net?

mixas84 [53]

Triangular prisms have their own formula for finding surface area because they have two triangular faces opposite each other. The formula A=12bh is used to find the area of the top and bases triangular faces, where A = area, b = base, and h = height.

8 0

3 years ago

1. A simulator that randomly generates a line of 20 plus signs or o’s was run 10 times to analyze data on members who pay for a

Over [174]

A simulator that randomly generates a line of 20 plus signs or o’s was run 10 times to analyze data on members who pay for a trainer at a fitness gym. A plus sign represents a member who pay for a personal trainer.

8 0

3 years ago