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Dima020 [189]
3 years ago
10

Given the position function s(t), s(t) = t2 + 3t + 1, where s is measured in meters and t is in seconds, find the velocity and a

cceleration of the particle at t = 4 seconds. (5 points) 11 m/sec; 2 m/sec2 2 m/sec; 0 m/sec2 11 m/sec; 0 m/sec2 12 m/sec; 2 m/sec2
Mathematics
1 answer:
stiks02 [169]3 years ago
5 0

Answer:

  11 m/s; 2 m/sec²

Step-by-step explanation:

v(t) = s'(t) = 2t +3

v(4) = 2·4 +3 = 11 . . . m/s

__

a(t) = v'(t) = 2 . . . . m/s²

__

Velocity and acceleration are 11 m/s and 2 m/s².

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Values for the labor force participation rate of women​ (LFPR) are published by the U.S. Bureau of Labor Statistics. A researche
Anna [14]

Answer:

(A) For this research we made use of the paired t test.

(B) For the t test, we conclude that in the null Hypothesis H₀, there was no difference between the average labor force participation rate for women between the years of 1968 and​ 1972 as against the alternate Hypothesis Hₐ.

From the output data we have, since the P value is 0.024 and  is lesser than the alpha value of 0.05, we will accept the alternate Hypothesis instead of the null Hypothesis.

Note:Kindly find an attached copy of the complete question below.

Step-by-step explanation:

Solution

Recall that:

The U.S of Bureau of Labor Statistics have published Values for the labor force participation rate of women​ (LFPR).

We are more interested in if there was a difference between female participation 1968 and​ 1972, a rapid change in women.

so we will check values for 19 randomly selected cities for 1968 and​ 1972,

Now,

(a) Which of this test is most appropriate for this data

The test which will be more suitable for these data will be paired to test t.

Because the data is for labor force participation for two different years, we apply the t test. now that we are making a comparison of two different year times, we will apply the t test in this research.

In this case, the sample size for both the years evaluated should be same, since we need to pair each and all the data.

(b)By using the test you selected, explain your conclusion

Now, to test the data paired t test, we have already the null Hypothesis  H₀: In this case there  is no difference between the average labor force participation rate for women between the years of 1968 and​ 1972 as compared with the alternate Hypothesis Hₐ: there was a significant difference between the average labor force participation rate for women between the years of 1968 and​ 1972.

However, from the output, we have that the P value is 0.024 which is lower than the alpha value of 0.05.

In conclusion, the alternate Hypothesis accepted while the null Hypothesis is rejected.

Note: kindly find an attached copy of the complete question to this solution

below.

4 0
4 years ago
Multiple choice, plz help
babymother [125]
B will be the correct answer
6 0
3 years ago
Please help me I need to turn this in tommorow pls e plain or tell me the answer please I will give my points
Dvinal [7]

Hello from MrBillDoesMath!

Answer:s:

For #18, see attachment, "Scatterplot_18", where the data is plotted. It looks like choice J -- no association-- is the correct answer.

For #14 it looks like you had some confusion but are on the right track. The formula for compound interest is  Amount = P(1+r)^n, where P if the Principal (initial investment), r is the yearly rate, and "n" is the number of years invested. In your case,

A = 1000 ( 1 + .02)^3                 =>  as 2% = 2/100 = .02; n = 3 as money

                                                         invested for three years

A = 1000 (1.061208) =

      $1061.21

This is the same answer you got but is NOT one of the choices. Hmmm.....

Thank you,

MrB

6 0
3 years ago
Marcus wants to buy five baseballs he has $35 what is the most each baseball can cost
PolarNik [594]
The most each baseball can cost is $7
4 0
3 years ago
Read 2 more answers
Team awesome starts hiking up from base camp which is located at 4400 feet at a steady rate of 600 feet/hour. at the same time,
bogdanovich [222]
The LCM is
600. 900
1200. 1800
1800. 2700
2400. (3600)
3000. 4500
(3600.). 5400
4200. 6300
3 0
3 years ago
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