All categories

2 years ago

I need help plz 12 10 8 12.5

Mathematics

1 answer:

kherson [118]2 years ago

5 0

Answer:

Step-by-step explanation:

You might be interested in

Use the standard norml distribution or the t-distribution to construct a 99% confidence interval for the population mean. Justif

dalvyx [7]

Answer:

E) we will use t- distribution because is un-known,n<30

the confidence interval is (0.0338,0.0392)

Step-by-step explanation:

Step:-1

Given sample size is n = 23<30 mortgage institutions

The mean interest rate 'x' = 0.0365

The standard deviation 'S' = 0.0046

the degree of freedom = n-1 = 23-1=22

99% of confidence intervals $t_{0.01} =2.82$ (from tabulated value).

$The mean value = 0.0365$

$x±t_{0.01} \frac{S}{\sqrt{n-1} }$

$0.0365±2.82 \frac{0.0046}{\sqrt{23-1} }$

$0.0365±2.82 \frac{0.0046}{\sqrt{22} }$

$0.0365±2.82 \frac{0.0046}{4.690 }$

using calculator

$0.0365±0.00276$

Confidence interval is

$(0.0365-0.00276,0.0365+0.00276)$

$(0.0338,0.0392)$

the mean value is lies between in this confidence interval

(0.0338,0.0392).

Answer:-

using t- distribution because is unknown,n<30,and the interest rates are not normally distributed.

4 0

2 years ago

There were 3995 more hits on the school's website in January than February. February had 9854 hits. How many hits did the school

ozzi

In both months they had 23,703 and in January they had 13,849

5 0

3 years ago

Factorize the following jx+sy-sx-jy

BartSMP [9]

Answer:

(x - y)(j - s).

Step-by-step explanation:

jx + sy - sx - jy

= jx - sx + sy - jy

= x(j - s) - y(j - s)

= (x - y)(j - s).

8 0

3 years ago

-2 - 3k - 2 = -2k + 8 - k

Reika [66]

Step-by-step explanation:

I'm not sure but that's what I'm getting 3k=2 jn simplest form

6 0

2 years ago

What is the area of this figure? Enter your answer in the box

DIA [1.3K]

The answer should be 51

4 0

3 years ago

Read 2 more answers