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Diano4ka-milaya [45]
3 years ago
5

TÍNH GIÁ TRỊ Zt DÙNG ĐỂ KIỂM ĐỊNH BÀI TOÁN SAU. Điều tra năng suất của vải thiều Thanh Hà trên 25 cây người ta tính được năng su

ất trung bình là 64,7 kg/cây và độ lệch mẫu s=2 (kg/cây). Giả sử năng suất vải là biến ngẫu nhiên có phân phối chuẩn. Với mức ý nghĩa 5%, có thể cho rằng năng suất trung bình của vải thiều Thanh Hà nói chung cao hơn 61kg/cây được hay không? (4 Điểm)
Mathematics
1 answer:
arlik [135]3 years ago
6 0

Answer:

I got nothing sorry:((( hope u find help tho

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rusak2 [61]
-12.405=-12 405/1000= 12 81/200
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3 years ago
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Fruit Company A recently released a new applesauce. By the end of its first year, profits on this product amounted to $37,100. T
Anastasy [175]

Answer: 11 year

P(1) = 37,100

P(4) = 58,400

The linear equation (for x ≥ 1)

P(x) = 37,100 + a(x-1)

For x = 4

58,400 = 37,100 + a(4-1)

58,400 - 37,100 = 3a

21300 = 3a

a = 7100

So, the linear equation:

P(x) = 37100 + 7100*(x-1)

P(x) = 37100 + 7100x - 7,100

P(x) = 7100x + 30000

To find when the profit should reach 108100, we can substitute P(x) by 108100.

108100 = 7100x + 30000

108100 - 30000 = 7100x

78100 = 7100x

x = 78100/7100

x = 11

Answer: 11 year

7 0
2 years ago
GIVING BRAINLIEST Graph and solve the inequality y>-|x-5|-1
MakcuM [25]

Answer:

First, solve for two points as an equation instead of an inequality to find the boundary line for the inequality.

For:

x

=

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(

0

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5

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For:

x

=

−

2

y

=

−

2

+

5

y

=

3

Or

(

−

2

,

3

)

We can now plot the two points on the coordinate plane and draw a line through the points to mark the boundary of the inequality.

The boundary line will be solid because the inequality operator contains an "or equal to" clause.

graph{(x^2+(y-5)^2-0.125)((x+2)^2+(y-3)^2-0.125)(y-x-5)=0 [-20, 20, -10, 10]}

Now, we can shade the left side of the line.

graph{(y-x-5) >= 0 [-20, 20, -10, 10]}

6 0
3 years ago
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A laptop computer is purchased for 2300 . After each year, the resale value decreases by 35% . What will the resale value be aft
denis-greek [22]
100-35 = 65
65% de 2300 = 1495 (mes 1)
2300-1495 = 805 (mes 2)
65% de 805 = 523,25 (mes 3)
65% de 523,25 = 340,1125 ~ 340,10 (mes 4)
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3 years ago
The distance between Henry's house and his school is 648 feet. How many yards are equivalent to 648 feet?
vlabodo [156]

Answer:

216 yards

Step-by-step explanation:

There are 3 feet in a yard, so the number of yards is equal to the number of feet divided by 3.

648/3 = 216

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