MATHEMATICS COLLEGE

A random sample of size 100 was taken from a population. A 94% confidence interval to estimate the mean of the population was computed based on the sample data. The confidence interval for the mean is: (107.62,129.75). What is the z-value that was used in the computation. Round your z-value to 2 decimal places.

Answers

Answer 1

Answer:

Answer: 1.88

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\mu\ \pm z_(\alpha/2)(\sigma)/(√(n))$

Given : Significance level : $1-0.94=0.06$

Critical value : $z_(\alpha/2)=z_(0.06/2)=z_(0.03)$

By using the standard normal distribution table for z, we find the critical value of $z_(0.03)$ corresponds to the p-value 0.03.

$z_(0.03)=1.8807936\approx1.88$

Hence, the z-value that was used in the computation must be 1.88 .

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How many integers between 160 and 279 inclusive, are divisible by 7?

Answers

Answer:

Step-by-step explanation:

We can put this as an AP (arithmetic progression).

The first number, after 160, that is divisible by 7 is:

161

The last number before 279 that is divisible by 7 is:

273

We can use the formula:

$t_n=a+(n-1)d$

Where

tn is the nth term [here we take the last one, 273

a is the first term [161]

d is the common difference [7]

and n is the number of terms, we are trying to find this.

Substituting we get:

$t_n=a+(n-1)d\n273=161+(n-1)(7)\n273=161+7n-7\n273=154+7n\n7n=119\nn=17$

Hence, there are 17 integers

Helppp I’ll mark brainliest

Answers

answer:

I gotdas the answer

Find the 1000th term for the sequence

Answers

Answer:

D. 7017

Step-by-step explanation:

if 24 is the first term, find 7x999, or 7x1000-7 and add 24

however a better way would be to use the formula

value=a+(n-1)d

a = the first term in the sequence (24)

n = the amount of terms you need (1000)

d = the common difference between terms (7)

I need help with this one pleaseeeeeee (first will get brainliest)

Answers

Answer:

y = x + 15

Step-by-step explanation:

I tried all of them but that one works. U can try it on each number. Brainliest plz! Hope this helps!

Answer:

Y=2x is the answer

Step-by-step explanation:

Question 6(06.02 MC)
Which of these is the algebraic expression for "5 less than 6 times some number?" (1 point)
6t - 5
Ob
5t-6
С
5 - 6t
Od
6-50

Answers

the answer to your question: 5 - 6t
why it’s saying for each number for 6 so what ever number times 6 is t

The difference between seven and triple the input

Answers

Answer: 3x - 7

x = some input number

3x = triple the input

3x - 7 = difference of triple the input and 7

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