Answer:
D) x² + 4x + 7
Step-by-step explanation:
2x + 6 + x² + 2x + 1
x² + 2x + 2x + 6 + 1
x² + 4x + 7
The data used consists Standing/Walking time (minutes per day) spent by two types of people (Lean and Obese).
<h3>How to illustrate the data?</h3>
The claim is that lean people spend more time walking and standing than obese people. We will be using right-tailed test.
The steps include:
- Collect a sample of both groups
- Calculate the mean and standard deviation of the two groups
- State the null and alternate hypothesis and alpha.
- Calculate Test Statistic
- Make a conclusion based on our test.
Learn more about data on:
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Part A:
Given that in a sample of 400 registered voters, 204 were democrats, i.e. n = 400, <span>

</span>The 95% confidence interval for the proportion of registered democrats voters in the population is given by:

Part B:
Given that t<span>here
are 169 million registered voters in the US, the interval for
the number of registered democrats in the population is given by
[0.461(169,000,000), 0.559(169,000,000)] = (77,909,000, 94,471,000)
</span>
Answer:
one gift was $6.40 and the other was $19.20
Step-by-step explanation:
-1+1=0. So your answer is -1 and 1