Question

how
do i use my TI 84 calculator when solving c=0.80??

Find the critical value z c necessary to form a confidence
interval at the level of confidence shown c= 0.80

Answer #1

The critical value of Z necessary to form a confidence interval at the level of confidence 0.80 is = = = 1.282

We have to press the '2ND' button on TI-84 calculatorand then press the 'VARS' button which has the second function of 'DISTR'. Next, we should navigate down to the 'invNorm(' option by pressing the '3' button on the calculator. Enter 0.9 on the area TO THE LEFT of the value.

I was wondering how to find the are left of a z score on a TI-84
calculator.
For example, find the area to the left of z=-3.20 when the mean
is 64.2 and standard deviation is 4.2
Please explain with the use of the TI 84!

How can I do this on TI-84 Calculator Use technology to
construct the confidence intervals for the population variance
sigmasquared and the population standard deviation sigma. Assume
the sample is taken from a normally distributed population.
cequals0.95, ssquaredequals7.84, nequals28 The confidence
interval for the population variance is ( nothing, nothing).

P(-1.457<z<1.457)
How does this equal 0.8549??? How do I do this on the TI-84?

How to use TI 83/84 to solve for critical value given two
independent random samples?
(Assume 90% confidence interval for true difference between the
population means. Assume population variances are not equal and
that the two populations are normally distributed.)
Assume for population 1, n=11, x=133, s=20, for population 2,
n=12, x=151, s=22.

find the critical value zc necessary to form a
confidence interval at the level of confidence shown below
c=.89

How do you do this problem using a Ti-84 calculator "apps",
"finance", "TVM Solver."
---------------------------------------------------------------------------------------------
Part A.)
I am starting a retirement savings program. I expect to need
$2,000,000 in 40 years I begin with a deposit of $650.00 and then
deposit $450.00 per month at an interest rate of 0.500% per month I
also have a trust fund that will add $20,000 to the fund at the end
of the 7th year What will my monthly deposit need to...

Using the TI 84 calculator, find the area under the standard
normal curve. Round the answers to four decimal places.
a) find the area under the standard normal curve to the left of
z= -2.16
b) find the area under the standard normal curve to the right of
z =-0.04
c) find the area under the standard normal curve that lies
between z =-2.3 and z=1.08
d) find the area under the standard normal curve that lies
outside the interval...

D15: How do you use the TI-calculator to graph linear
inequalities?
1. Find a video explaining this process and post the link. Here
is a video that I found on YouTube explaining how to graph Linear
Inequalities using the TI Calculator:
Explain how to graph x > 5 by hand and on the TI.
2. Explain how to graph y < 7 by hand and on the TI.

I would like to know how to solve this problem using calculator
TI 84.
A data set includes data from student evaluations of courses.
The summary statistics are n=90, x̄=3.68, s=0.63.
Use a 0.10 significance level to test the claim that the population
of student course evaluations has a mean equal to 3.75. Assume that
a simple random sample has been selected. Identify the null and
alternative hypothesis, test statistics, P-value, and state the
final conclusion that addresses the original...

Assume that the significance level is alpha equals 0.1. Use the
given statement and find the P-value and critical value(s). The
test statistic of z=-1.56 is obtained when testing the claim that
p=1/5.
Can someone explain how to do this on TI-84 calculator?

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