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iren2701 [21]
3 years ago
11

Help me plzz I really need itttt​

Mathematics
1 answer:
saveliy_v [14]3 years ago
4 0

Answer:

Step-by-step explanation:

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A small business ships specialty homemade candies to anywhere in the world. Past records indicate that the weight of orders is n
Fantom [35]

Answer:

90% confidence interval for the true mean weight of orders is between a lower limit of 103.8645 grams and an upper limit of 116.1355 grams.

Step-by-step explanation:

Confidence interval for true mean weight is given as sample mean +/- margin of error (E)

sample mean = 110 g

sample sd = 14 g

n = 16

degree of freedom = n - 1 = 16 - 1 = 15

confidence level = 90% = 0.9

significance level = 1 - C = 1 - 0.9 = 0.1 = 10%

critical value (t) corresponding to 15 degrees of freedom and 10% significance level is 1.753

E = t × sample sd/√n = 1.753×14/√16 = 6.1355 g

Lower limit of sample mean = sample mean - E = 110 - 6.1355 = 103.8645 g

Upper limit of sample mean = sample mean + E = 110 + 6.1355 = 116.1355 g

90% confidence interval is (103.8645, 116.1355)

4 0
3 years ago
Read 2 more answers
Are the given values in the table enough information to show an exponential function instead of a linear function? If not, expla
kodGreya [7K]

I think this a linear function. The graph has a constant flow of going up. In other words, it is linear.

5 0
2 years ago
Runner a averages 5 mph and run it B rat averages 6 mph these rates how much longer does it take runner A then runner be to run
Kipish [7]
Takes runner A 18 more minutes
8 0
3 years ago
Tyler's earns a commission. He makes 4% of the amount he sells. Last week, he sold $900 worth of shoes. How much was his commiss
xxMikexx [17]
He earned $325 because 900 divided by 4% = $225! :)
7 0
2 years ago
Solve the system: <br> 2x+6y=36<br> x+4y=20
Assoli18 [71]

<u>Let's solve this problem step-by-step</u>

<u>Let's set</u>:

   2x + 6y = 36 -- equation 1

   x + 4y = 20 -- equation 2

(equation 2) * 2

   2x + 8y = 40 -- equation 3

(equation 3) - (equation 1)

   2y = 4

   y = 2 -- equation 4

Plug (equation 4)'s value of y into (equation 2)

   x + 4(2) = 20

   x = 20 - 8

   x = 12

<u>Thus x = 12 and y = 2</u>

<u>Let's check, by substituting these values</u>

  2x + 6y = 36\\2(12)+6(2) = 36\\24+12=36\\36=36\\\\x+4y=20\\12+4(2)=20\\12+8=20\\20=20

<u>Answer: x = 12 and y = 2</u>

Hope that helps!

5 0
2 years ago
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