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
Goryan [66]
3 years ago
10

If a runner has 20 ice trays and one is purple what is the answer

Mathematics
1 answer:
MAVERICK [17]3 years ago
6 0
19 are different colors
You might be interested in
rent is putting in a sidewalk that is 1/18 yard thick, 9 yards long, and 1 yard wide. how many cubic yards of cement does he nee
madreJ [45]

Answer:

1/18 x 9 x 1 = .5 cubic yards. Why would you ever waste time asking this....

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
In the Salk vaccine field trial, 400,000 children were part of a randomized controlled double-blind experiment. Just about half
EastWind [94]

Answer:

Step-by-step explanation:

From the given information:

The number of children that were randomly allocated to each vaccination group; n₁ = 200,000

No of polio cases X₁ = 57

Now, in the vaccine group:

the proportion of polio cases is:

\hat p_1 = \dfrac{57}{200000}

=  0.000285

The number of children that were randomly allocated to the placebo group, n₂ = 200,000

No of polio cases X₂ = 142

In the placebo group

the proportion of polio cases is:

\hat p_2 = \dfrac{142}{200000}

Null and alternative hypothesis is computed as follows:

H₀: There is no difference in the proportions of polio cases between both groups.  

H₁: There is a difference in the proportions of polio cases between both groups.

Let assume that the level of significance ∝ = 0.05

The test statistic  can be computed as:

Z = \dfrac{\hat p_1-\hat p_2}{\sqrt{\dfrac{\hat p_1 \hat q_1}{n_1}+ \dfrac{\hat p_2 \hat q_2}{n_2}}}

Z = \dfrac{0.000285-0.000710}{\sqrt{\dfrac{0.000285(1-0.000285)}{200000}+ \dfrac{0.000710(1-0.000710)}{200000}}}

Z = \dfrac{-4.25\times 10^{-4}}{\sqrt{\dfrac{0.000285(0.999715)}{200000}+ \dfrac{0.000710(0.99929)}{200000}}}

Z = - 6.03

P-value =  2P(Z < -6.03)

From the Z - tables

P-value =  2 × 0.0000

= 0.000

We reject the H₀ provided that P-value is very less.

Therefore, we may conclude that there is a difference in the proportions of polio cases between the vaccine group and placebo group not due to chance.

7 0
3 years ago
Calculate the volume of the rectangular prism below​
Svetradugi [14.3K]

Answer:

210 in

Step-by-step explanation:

3 0
2 years ago
1. Reduce: 21 =<br> 21<br> Reduce:<br> 28
Hoochie [10]

Answer:

3/4

Step-by-step explanation:

21/28=3/4

3 0
3 years ago
Solve the following equation.
amm1812
U=2
s= -2
those are the first two
4 0
3 years ago
Other questions:
  • Am I right so far?? Idk pls help
    9·1 answer
  • Priya tried to solve an equation step by step. \qquad\begin{aligned} \dfrac f{0.25}&amp;=16\\\\ \\ \dfrac{f}{0.25} \cdot0.25&amp
    5·2 answers
  • Melissa’s family is driving out of state to her grandmother’s house. They know that it takes 20 gallons of gas to get there, and
    9·1 answer
  • how doi do 1 only? i honestly don't know how to do it. first one to answer is brainliest. if you mind plz also send me the answe
    6·2 answers
  • Solve for x , (2x-1)=5(x+1)<br><br>no links​
    5·2 answers
  • How do you find an exponential growth model
    10·1 answer
  • Helpppppp pleaseeee I have to ansswer Find the area of the shaded region
    10·1 answer
  • What is g+g+g+g+g+g= as equivalent form? Can anyone help me with this
    13·1 answer
  • WILL GIVE BRAINLIEST!!!!!!
    13·1 answer
  • You travel 50 miles in 4 hours. What is your average speed of
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!