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bixtya [17]
3 years ago
11

A botanist wishes to estimate the typical number of seeds for a certain fruit. She samples 41 specimens and counts the number of

seeds in each. Use her sample results (mean = 54.7, standard deviation = 5.3) to find the 90% confidence interval for the number of seeds for the species. Enter your answer as an open-interval (i.e., parentheses) accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).
Mathematics
1 answer:
e-lub [12.9K]3 years ago
6 0

Answer:

(53.3; 56.1)

Step-by-step explanation:

Given that:

Sample size, n = 41

Mean, xbar = 54.7

Standard deviation, s = 5.3

Confidence level, Zcritical at 90% = 1.645

Confidence interval :

Xbar ± Margin of error

Margin of Error = Zcritical * s/sqrt(n)

Margin of Error = 1.645 * 5.3/sqrt(41)

Margin of Error = 1.362

Lower boundary = 54.7 - 1.362 = 53.338

Upper boundary = 54.7 + 1.362 = 56.062

(53.3 ; 56.1)

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gogolik [260]
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So  eight and five sixths = (48 + 5) fifths=  fifty-three sixths.

31).  Twenty-seven of the thirds are the same as  (27/9)  = 3 .
That leaves a remainder of 2 thirds.
So  twenty-nine thirds are the same as  3 and 2/3 .

32).  Thirty-two of the fourths are the same as  (32/4) = 8 .
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5 0
3 years ago
Translate 3(x-y)=2y+9 into a verbal sentence
dezoksy [38]

Answer:

3 times x then minus 3 times y equal 2y plus 9

Step-by-step explanation:

Not sure if it works......

that's the verbal sentence (which is not formal sentence) i can think of now......

7 0
2 years ago
Given the length of three sides of a triangle, which is a right triangle?
navik [9.2K]
Pythagoras, cool.
30^2 is 900
15^2 is 225
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6 0
3 years ago
6. Find all missing angles m<1 m<2 m<3​
masha68 [24]

Answer:

1. 128

2. 52

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4. 133

5. 81

Step-by-step explanation:

1. <1 and <52 are same side interior angles, therefore supplementary. So they should add up to equal 180, this means that <1 is 180 - 52. Solve to get <1 is 128

2. <2 is an alternate interior angle to <52, this means that they are congruent. Since they are congruent, they have the same value of 52.

3. <3 is an alternate interior angle to <47, so they are congruent, this means that they both have a value of 47

4. <4 is supplementary to <3 so you can say that <4 is equal to 180 - 47. Solve this to get <4 is 133

5. <5, <52, and <47 are supplementary when you combine all three. So you can create an equation that says <5 is equal to 180 - 52 + 47. This gives you that angle 5 is 81.

6 0
3 years ago
The corner store sells oranges at a rate of $2.00 per orange. If Tiffany has $10.00 dollars, how many
baherus [9]

Answer:

5 oranges

Step-by-step explanation:

If you have $10 and each orange is $2, you can buy 5 oranges. You can do 10/2 to find the answer.

6 0
3 years ago
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