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ad-work [718]
2 years ago
14

Question 3 of 56

Mathematics
1 answer:
Mumz [18]2 years ago
4 0

Answer:

only B

Step-by-step explanation:

since A) its 180+6 which absolutely greater than 9

C)31-1=30 which is greater than 8

D) 4 is greater than 3

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There are 70 students in the school band. 40% of them are sixth graders, 20% are seventh graders, and thr rest are eighth grader
kotykmax [81]
The answer is 10% there is 40% six graders and 20% seventh graders then you need 10% more
4 0
3 years ago
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Which is the simplified form of r Superscript negative 7 Baseline + s Superscript negative 12?
Snowcat [4.5K]
I can’t even read that but the answer is 3 I think
3 0
3 years ago
A company that stocks shelves in supermarkets is considering expanding the supply that it delivers. Items that are not sold must
lozanna [386]

Answer:

p-value: 0 .1292

Step-by-step explanation:

Hello!

The objective is to test if it is profitable to expand supply delivery. The company thinks that if more than 59% (symbolically p > 0.59) of the items are selling out in the markets, then it is profitable to increase the deliveries.

A sample of 48 markets was taken and it was registered that the item was sold out in 32 of them.

The study variable is.

X: Number of markets where the item was sold out in a random sample of 48 markets.

The study parameter is the proportion of "bare shelves"

sample proportion 'p= (32/48) = 0.67

The hypothesis is:

H₀: p ≤ 0.59

H₁: p > 0.59

α: 0.05

Remember: The p-value is defined as the probability corresponding to the calculated statistic if possible under the null hypothesis (i.e. the probability of obtaining a value as extreme as the value of the statistic under the null hypothesis).

So, to calculate the p-value you have to first calculate the statistic under the null hypothesis:

Z= \frac{'p - p}{\sqrt{\frac{p(1 - p)}{n} } }

Z= \frac{0.67 - 0.59}{\sqrt{\frac{0.59*0.41}{48} } }

Z= 1.1269≅ 1.13

Keep in mind that the p-value as the test is one-tailed. Now you can calculate the p-value as:

P(Z ≥ 1.13)= 1 - P(Z < 1.13)= 1 - 0.8706 =0.1292

The decision is to reject the null hypothesis. So at a level of 5% you can say that it is probitable to increase the deliveries.

I hope you have a SUPER day!

6 0
3 years ago
Need help with number 26 and 27
Vlad1618 [11]
26
thursday 138 (46 x 63 / 21 = 138)
friday 99 (33 x 63 / 21 = 99)

27.
 100% - 80% = 20%

20% = 0.2

150 * 0.2 = 30

answer: 30 students chose math




4 0
3 years ago
An equation was used to predict possible sales of phones for 6 months. The actual sales of phones are also listed. Actual sales
Mariulka [41]

Answer:

  20

Step-by-step explanation:

The sum of (actual - predicted) is ...

  {55, 150, 325, 510, 780, 990} - {40, 150, 300, 500, 800, 1,000}

  = total({15, 0, 25, 10, -20, -10}) = 20

The sum of residuals is 20.

8 0
3 years ago
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