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Romashka-Z-Leto [24]
4 years ago
15

Here are summary statistics for randomly selected weights of newborn​ girls: n=250​, x_=32.9 ​hg, s=6.9 hg. Construct a confiden

ce interval estimate of the mean. Use a ​95% confidence level. Are these results very different from the confidence interval 31.9 hg < μ < 34.5 hg with only 19 sample​ values, x_ = 33.2​hg, and s = 2.9 ​hg?
Mathematics
1 answer:
butalik [34]4 years ago
6 0

Answer:

Step-by-step explanation:

Here are summary statistics for randomly selected weights of newborn​ girls: n=250​, x_=32.9 ​hg, s=6.9 hg. Construct a confidence interval estimate of the mean. Use a ​95% confidence level.

The confidence interval of mean

=32.9 ± 1.96 × 6.9/250

Confidence Interval = 32.9 ± 0.5382

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gabriel has 6 2/3 of almond flour to make macaroons. he plans to make a recipe that uses 3/4 of a cup of almond flour. what is t
harina [27]

Answer:

8 cups max

Step-by-step explanation:

3/4 cup = 1 recipe

6 2/3(20/3) cup =  <u>20/3 x 1 </u>

                                  3/4

= <u>20</u> / <u>3</u>

   3     4

= <u>20</u> x<u> 4</u>

   3     3

= 80/9

= 8 cups max

the 9th cup will not be enough.

6 0
3 years ago
A construction crew is lengthening a road. The road started with a length of 53 miles, and the crew is adding 3 miles to the roa
Sedbober [7]

Answer:

a). L=53+3 D.... equation

b). Total length of the road after the crew has worked 31 days=146 miles

Step-by-step explanation:

Step 1

Find an expression for calculating the total length of a the road as follows;

L=F+(M×D)

where;

L=total length of the road in miles

F=starting length of the road in miles

M=number of miles per day added

D=number of days the crew has worked

In our case;

L=unknown

F=53 miles

M=3 miles per day

D=unknown

L=53+(3×D)

L=53+3 D.... equation

Solve for L when D=31 days

L=53+(3×31)

L=53+93=146

Total length of the road after the crew has worked 31 days=146 miles

7 0
4 years ago
Read 2 more answers
Please answer A,B,C,D
padilas [110]

Answer:its c ok its the best way

Step-by-step explanation:

4 0
3 years ago
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Dima020 [189]

Answer:

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3 0
3 years ago
10<br> Complete the conversion. $2 per pound = $_ per ounce (round to the nearest hundredth)
marusya05 [52]

Answer:

$2 per pound = $0.125. per pound

Step-by-step explanation:

The unit of weight conversion from pound to ounce is given as follows;

1 pound weight  = 16 ounces weight

1 ounce weight = 1/16 pound weight

Therefore, whereby the cost of 1 pound weight of an item is two dollars, we have;

The cost of one ounce weight of the item will be the cost of 1 pound weight, divided by 16 and given as follows;

$2 per pound = $2/16 per pound  = $0.125. per pound

Therefore;

$2 per pound = $0.125. per pound.

5 0
4 years ago
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