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Yuri [45]
2 years ago
5

Chin researched the amount of money 150 students earned per month from jobs held during the summer. He created a table of six sa

mple means from his collected data. Sample Number Sample Mean ($) 1 208 2 235 3 245 4 207 5 205 6 210 Using his results, what is a valid prediction about the mean of the population?
Mathematics
2 answers:
dem82 [27]2 years ago
8 0

the choices are below

the predicted mean of the population will be less than 200.

The predicted mean of the population will be less than 245.

The predicted mean of the population will be more than 275.

The predicted mean of the population will be more than 250.

b is the answer

likoan [24]2 years ago
3 0

Answer:

the predicted mean will be less than 245

Step-by-step explanation:

For ungrouped data

mean can be calculated using formula

sum of all observations/total no of observations

For grouped data

mean (x)= £f(x)/n

n represents the frequency

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A data set includes data from 500 random tornadoes. The display from technology available below results from using the tornado l
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Question:

The question is incomplete. The display technology was not given. Find below the complete question and the answers.

Display from technology:

Hypothesis Test Results

μ : Mean of variable      

H₀ : μ=2.7 miles

HA  : μ >2.7 miles

Variable     Sample Mean      Std. Err.        DF           T-Stat            P-value

Length            3.23601        0.285185      499        2.230166        0.0131

Step-by-step explanation:

From the result obtained, we have;

Null hypothesis:   H₀ : μ=2.7 miles

Alternative hypothesis:   HA  : μ >2.7 miles

Test statistics = 2.230166

P-value =  0.0131

Significant level: α = 0.05

Since the P value is less than the significance level, we can reject the null hypothesis.

There is no sufficient evidence to support the claim that the mean tornado length is greater than 2.7 miles

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