3 years ago

I need help on this:(

Mathematics

1 answer:

Alex Ar [27]3 years ago

3 0

Answer:

Not to sure if this is correct but I think it is 6: 1 : 18

pls msg me if you need explanation

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The gestation time of cats is approximately 68 days with a standard deviation of 3.9 days and is approximately Normally distribu

avanturin [10]

Answer: 90% confidence interval would be (66.92,69.08).

Step-by-step explanation:

Since we have given that

Number of kittens = n = 35

Mean = 68 days

Standard deviation = 3.9 days

We need to find the 90% confidence interval.

So, z= 1.645

So, intervals would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=68\pm 1.645\times \dfrac{3.9}{\sqrt{35}}\\\\=68\pm 1.08\\\\=(68-1.08,68+1.08)\\\\=(66.92,69.08)$

Hence, 90% confidence interval would be (66.92,69.08).

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4 years ago

How many times can 15 go into 75

Anestetic [448]

It goes into 5 times hope you enjoy

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3 years ago

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To find the product ab of two matrices a and b, the number of _______ in matrix a must equal the number of _______ in matrix

Anika [276]

A matrix A is identified as $A _{r*c}$ and matrix B is identified as $B _{r*c}$ .If the number of columns in A is the same as the number of rows in B, then you can multiply the matrices together. The product matrix, then, is made up of what's left over: rows from A and columns from B. So your answers above are, in the first blank: columns, and in the second blank: rows.

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3 years ago

A square has sides of 4cm. What is the area of the square.

Tanzania [10]

Answer:

answer would be 16 square cenimeters

Step-by-step explanation:

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3 years ago

(30 POINTS)

Alborosie

Using Pythagorean’s theorem
Side = 24 cm

Hence perimeter = 24+24+10+10
= 68 cm

Hence answer is 68cm