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Rasek [7]
3 years ago
14

In a community service class in the fall, 333 of the 151515 class sessions were lectures, while all others were devoted to field

work in parks. In the spring, the number of sessions devoted to fieldwork remained the same, but the total number of sessions increased to 181818. In the spring, what percent of class sessions were lectures? Choose 1 answer: 16.7\%
Mathematics
1 answer:
AfilCa [17]3 years ago
4 0

-15

Step-by-step explanation:

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Suppose that in a random selection of 100 colored​ candies, 26​% of them are blue. The candy company claims that the percentage
quester [9]

Answer:  a) -0.2252, b) 0.8219

Step-by-step explanation:

Since we have given that

Sample size n = 100

Probability that candies are blue = p= 0.26

Probability that company claims that it is blue candy = P = 0.27

So, Q = 1-P= 1-0.27 = 0.73

So, Null hypothesis : H_0:p=P

Alternate hypothesis : H_1:p\neq P

So, the test statistic would be

z=\dfrac{p-P}{\sqrt{\dfrac{P.Q}{n}}}\\\\z=\dfrac{0.26-0.27}{\sqrt{\dfrac{0.27\times 0.73}{100}}}\\\\z=-0.2252

Since α = 0.05

So, critical value of z = 1.96

p-value = P(Z>Z(calculated)

Using the excel function , we get that

P(z>0.2252)\\\\=2\times 0.410.911845\\\\=0.8219

Hence, a) -0.2252, b) 0.8219

6 0
3 years ago
Hello! Please help me! I'm not good at subtracting fractions!
mafiozo [28]
The answer in an improper fraction is 
47/36

As a mixed number, it is 1 11/36

Hope you become an expert at this soon :)

3 0
3 years ago
Read 2 more answers
Hi, help:/<br> Thank you
erma4kov [3.2K]

Answer:

its the first on 5,3 can you give me brainliest

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
specialty T-shirts are being sold online for $30 each plus a one-time handling fee of $2.75 . The total cost is a function of th
myrzilka [38]

30(5)+2.75=152.75

The answer is D.

30t +2.75; 152.75

5 0
3 years ago
Please help, I don’t understand it so explain don’t just put the answer if u can lols
ludmilkaskok [199]

Answer

27 days

Step-by-step explanation:

father= 45 days

oldest son + father=27 days

youngest + father= 36 days

45-27=18

45-36=9

18+9=27

so it would take 27 days for both sons to complete the house

18 days=oldest son

9 days =youngest son

7 0
3 years ago
Read 2 more answers
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