1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gwar [14]
4 years ago
15

The following value is closest to what number? 292

Mathematics
1 answer:
NikAS [45]4 years ago
5 0
Your round it to 300 so the answer is 300
You might be interested in
9. Miguel measures 5 kg of rice. One kilogram is approximately equal to 2.2 pounds. Which
Nitella [24]

Answer: 11

Step-by-step explanation:

One kilogram is equal to 2.2 pounds so all you would have to do is multiply 2.2 x 5 and you get 11. :)

8 0
3 years ago
Solve 13+x/2=3x for x
skad [1K]
13=3x-x/2 13=5x/2 26=5x X=5.2
7 0
3 years ago
Read 2 more answers
Jackson hate about 8,351 calories worth of food in a week. About how many calories worth of food does he eat every day?
lawyer [7]

Answer:1193 calories

Step-by-step explanation:

First you divide 8351 by 7 since there are 7 days in a week. You get 1193

3 0
3 years ago
YO IS THIS RIGHT!??????? 12 POINNNTTTSS BOI
Amiraneli [1.4K]

Click off the first one because 180 (Thea) < 225 (Eleanor). Then keep the second one and click the third and fourth one.

3 0
3 years ago
The following data lists the ages of a random selection of actresses when they won an award in the category of Best​ Actress, al
Valentin [98]

Answer:

a) p_v =P(t_{(9)}

The p value is higher than the significance level given 0.01, so then we can conclude that we FAIL to reject the null hypothesis. And we can say that the true difference for Best Actresses is not significantly lower than the mean for Best​ Actors at 1% of significance.

b) The 99% confidence interval would be given by (-21.469;2.069)

c) We got the same conclusion as part a, sicne the confidence interval contains the value 0, we FAIL to reject the null hypothesis that the difference between the two

Step-by-step explanation:

Part a

Let put some notation  

x=actor's age , y = actress's age

x: 58 41 36 36 34 33 48 37 37 43

y: 26 27 34 26 35 29 23 42 30 34

The system of hypothesis for this case are:

Null hypothesis: \mu_y- \mu_x \geq 0

Alternative hypothesis: \mu_y -\mu_x

The first step is calculate the difference d_i=y_i-x_i and we obtain this:

d: -32, -14, -2, -10, 1, -4, -25, 5, -7, -9

The second step is calculate the mean difference  

\bar d= \frac{\sum_{i=1}^n d_i}{n}= -9.7

The third step would be calculate the standard deviation for the differences, and we got:

s_d =\frac{\sum_{i=1}^n (d_i -\bar d)^2}{n-1} =11.451

The 4 step is calculate the statistic given by :

t=\frac{\bar d -0}{\frac{s_d}{\sqrt{n}}}=\frac{-9.7 -0}{\frac{11.451}{\sqrt{10}}}=-2.679

The next step is calculate the degrees of freedom given by:

df=n-1=10-1=9

Now we can calculate the p value, since we have a left tailed test the p value is given by:

p_v =P(t_{(9)}

The p value is higher than the significance level given 0.01, so then we can conclude that we FAIL to reject the null hypothesis. And we can say that the true difference for Best Actresses is not significantly lower than the mean for Best​ Actors at 1% of significance.

Part b

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

The confidence interval for the mean is given by the following formula:  

\bar d \pm t_{\alpha/2}\frac{s}{\sqrt{n}} (1)  

Since the Confidence is 0.99 or 99%, the value of \alpha=0.01 and \alpha/2 =0.005, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.005,9)".And we see that t_{\alpha/2}=3.25  

Now we have everything in order to replace into formula (1):  

-9.7-3.25\frac{11.451}{\sqrt{10}}=-21.469  

-9.7+3.25\frac{11.451}{\sqrt{10}}=2.069  

So on this case the 99% confidence interval would be given by (-21.469;2.069)

Part c

We got the same conclusion as part a, sicne the confidence interval contains the value 0, we FAIL to reject the null hypothesis that the difference between the two means is 0.

8 0
3 years ago
Other questions:
  • What does r over -3=12 equals
    9·2 answers
  • The area of a trapezoid is 69.6 in2 and its altitude is 8.7 in. Find the perimeter of the trapezoid if the sum of its legs is eq
    7·1 answer
  • Scientific notation.<br><br> 108,000,000<br><br> what is the scientific exponents?
    10·2 answers
  • Please answer it in two minutes
    5·1 answer
  • Factor the expression 4b4 − 144 using the polynomial identity (x2 − y2) = (x − y)(x + y).
    10·2 answers
  • The positions of two divers from the water’s surface after a dive are shown:
    8·1 answer
  • Rewrite the expression in the form 3".<br> 3.3.3.3.3.3<br> 3.3.3.3
    9·1 answer
  • HELPPP ASAPPP 30 POINTS
    8·1 answer
  • A local deli makes turkey sandwiches and salami sandwiches at a weekly ratio of 2 salami sandwiches for every 5 turkey sandwiche
    5·1 answer
  • The Spanish Club is going on a trip to Spain over Spring Break so they are planning a fund-raiser. They will sell pralines at lu
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!