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olya-2409 [2.1K]
3 years ago
10

A sample of 900 members has a mean of 3.4cm and standard deviation of 2.61cm. Is the sample from a large population of mean 3.25

cm and standard deviation 2.26cm?​
Mathematics
1 answer:
Serga [27]3 years ago
5 0

Answer:

thth

Step-by-step explanation:

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15o=210 What does O equal?
Anna71 [15]
O=210/15=14
I hope I was helpful
8 0
4 years ago
Jordan bought a new sketchbook with 150 pages in it for art class. Each day, he uses 2 pages for assignments and sketchings. Whi
Alexeev081 [22]

Answer:

B.

Step-by-step explanation:

He uses two pages each day so they would be negative two and he had positive 150 pages, so the answer would be B.

8 0
3 years ago
sarah plans to buy a car in five years, so she invest $10,000. she receives an annual interest rate of 5%, compounded semiannual
nadya68 [22]

Answer:

$12,800.85

Step-by-step explanation:

Use the FV formula ; FV= PV(1+r) ^t

r = discount rate = 5%/2 = 2.5% or 0.025 as a decimal

t = total duration of investment = 5 *2 = 10 since it's semiannual compounding

PV = Amount deposited in present value terms = $10,000

FV = 10,000* (1+0.025)^10

FV = 10,000 *1.2800845

FV = 12,800.845

Therefore, Sarah will have $12,800.85 in 5 years.

3 0
4 years ago
Express the complex number z = -4+3i in polar form: r(cos⁡(θ)+i sin(θ)).
kirill [66]

Answer:

5( cos(- 0.64)+i sin(-0.64))

Step-by-step explanation:

Given:

z = -4+3i

r=\sqrt{(-4)^2+3^2}= 5

θ=tan^-^1(\frac{3}{-4} ) =  -0.64

Polar form=r(cosθ+i sinθ)=> 5( cos(- 0.64)+i sin(-0.64))

8 0
3 years ago
The price of a television was reduced from 250 to 200.By what percentage was the price of the television reduced? A.20 B.25 C.80
qaws [65]
Hey mate. This is the answer
the change in price was 50 dollars
Now divide your change in price by the original price
50/250=.2
To get that into a percentage multiply it by 100 and you get 20%
The answer is option a

Plssssss mark as brainliest
7 0
3 years ago
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