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Pie
3 years ago
14

Please help me solve these questions!!!

Mathematics
1 answer:
Veseljchak [2.6K]3 years ago
3 0
Don’t click that link it’s a scam
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8 groups of ___ hundredths is 0.32
Viktor [21]

Answer:

the answer is 0.4 The reason is because 0.4 x8=0.32

Step-by-step explanation:

6 0
3 years ago
Please help! Will give brainliest :)
Vedmedyk [2.9K]

Answer:

15 boys in 3 groups

15 girls in 4 groups

Step-by-step explanation:

60 ÷ 4 = 15

45 ÷ 3 = 15

Have an awesome day! :D

7 0
2 years ago
Various studies indicate that approximately 11% of the world's population is left handed. You think this number is actually high
Irina-Kira [14]

Answer:

a. H0 : p ≤ 0.11 Ha : p >0.11 ( one tailed test )

d. z= 1.3322

Step-by-step explanation:

We formulate our hypothesis as

a. H0 : p ≤ 0.11 Ha : p >0.11 ( one tailed test )

According to the given conditions

p`= 31/225= 0.1378

np`= 225 > 5

n q` = n (1-p`) = 225 ( 1- 31/225)= 193.995> 5

p = 0.4 x= 31 and n 225

c. Using the test statistic

z=  p`- p / √pq/n

d. Putting the values

z= 0.1378- 0.11/ √0.11*0.89/225

z= 0.1378- 0.11/ √0.0979/225

z= 0.1378- 0.11/ 0.02085

z= 1.3322

at 5% significance level the z- value is ± 1.645 for one tailed test

The calculated value falls in the critical region so we reject our null hypothesis H0 : p ≤ 0.11 and accept  Ha : p >0.11 and  conclude that the data indicates that the 11% of the world's population is left-handed.

The rejection region is attached.

The P- value is calculated by finding the corresponding value of the probability of z from the z - table and subtracting it from 1.

which appears to be 0.95 and subtracting from 1 gives 0.04998

8 0
3 years ago
At midnight the temperature in a garden was -2 °C.
WITCHER [35]
7 degrees celcious

-2+9= 7
7 0
3 years ago
Read 2 more answers
The average mass of a giraffe is approximately 1 × 10^3 kilograms. The average mass of a blue whale is approximately 2 × 10^6 ki
Jlenok [28]
Giraffe = 1,000 kg
Whale = 2,000,000 kg

Whale has 2,000 times the mass. 
7 0
3 years ago
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