If a = b and b = c, which statement must be true? A. a=c B. c = c.-a=c D. -a = -6
2 answers:
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Answer:
There is not sufficient evidence to support the claim that there is a linear correlation between the heights and pulse rates of women
Step-by-step explanation:
The correlation coefficient between the variables h(height in inches) and pulse rates (in beats per minute) is 0.202
Sample size n=40
Level of significane alpha = 0.01
Create null and alternate hypothesis as:
H0: r=0
Ha: r not equal 0
(Two tailed test at 1% significance level)
Sample r = 0.202
r difference = 0.202
test statistic t =
df =n-2 =38
t critical value for 0.01 and df =38 is 2.704
Since our test statistic lies below 2.704, we accept null hypothesis
There is not sufficient evidence to support the claim that there is a linear correlation between the heights and pulse rates of women
Answer:
(a) Brenda saved $23.50.
(b) The rate at which Brenda is saving money is<u> 0.5 dollars per day</u>.
(c) money saved on is <u>$27.</u>
Step-by-step explanation:
Given:
Initial amount in the jar is,
Amount in the jar after a week or 7 days is,
Brenda is saving money at a linear rate.
(a)
Now, money at the end of the week is the total money saved by Brenda.
Therefore, total money saved by Brenda is equal to the money saved at the end of the week. So,
Total money saved by Brenda =
(b)
The rate of change of a function is given as:
Here,
Therefore, the rate at which Brenda saves money is given as:
Therefore, the rate at which Brenda is saving money is<u> </u>0.5 dollars per day.
(c)
A linear function is of the form , where 'm' is the rate and 'b' is the initial value of the function.
Therefore, the linear function for the money saved by Brenda can be written as:
Now, is given by plugging in 14 for 'x' in the above expression. So,
Therefore, money saved on is $27.