2. In a lab experiment, students estimis known to have a true value of 5% weight by volume, but students' results are known to followapproximately a normal distribution with a standard deviation of 0.09 percentage points.ate the concentration of an unknown salt in solution. The solutionA) Assuming that the student measurements are unbiased and independent, what proportion ofstudents will obtain a concentration estimate greater than 506%?2-х-М-0.05004 npICo.oso)16SAssuming that the student measurements are unbiased and independent, what proportion ofof 20 students will obtain a sample mean concentration estimate greater than 5.06%?classes20-4o.o20 20C ts Circle the name of a plot that could be used to display the distribution of the concentrationsobtained by the class of 20 students (circle only one answer, though more may be correct):time plotpie chart stem plot histogramar plot

Question
Asked May 13, 2019
2. In a lab experiment, students estim
is known to have a true value of 5% weight by volume, but students' results are known to follow
approximately a normal distribution with a standard deviation of 0.09 percentage points.
ate the concentration of an unknown salt in solution. The solution
A) Assuming that the student measurements are unbiased and independent, what proportion of
students will obtain a concentration estimate greater than 506%?
2-х-М
-0.05004 np
ICo.oso)
16S
Assuming that the student measurements are unbiased and independent, what proportion of
of 20 students will obtain a sample mean concentration estimate greater than 5.06%?
classes
20-4
o.o
20 20
C ts Circle the name of a plot that could be used to display the distribution of the concentrations
obtained by the class of 20 students (circle only one answer, though more may be correct):
time plot
pie chart stem plot histogram
ar plot
help_outline

Image Transcriptionclose

2. In a lab experiment, students estim is known to have a true value of 5% weight by volume, but students' results are known to follow approximately a normal distribution with a standard deviation of 0.09 percentage points. ate the concentration of an unknown salt in solution. The solution A) Assuming that the student measurements are unbiased and independent, what proportion of students will obtain a concentration estimate greater than 506%? 2-х-М -0.05004 np ICo.oso) 16S Assuming that the student measurements are unbiased and independent, what proportion of of 20 students will obtain a sample mean concentration estimate greater than 5.06%? classes 20-4 o.o 20 20 C ts Circle the name of a plot that could be used to display the distribution of the concentrations obtained by the class of 20 students (circle only one answer, though more may be correct): time plot pie chart stem plot histogram ar plot

fullscreen
check_circleExpert Solution
Step 1

Let X be the concentration estimate. X follow a normal distribution with mean 5% and standard deviation 0.09 percentage points.

We need proportion of students will obtain a concentraton estimate more than 5.06% = P(X > 5.06).

Here we calculate Z score for X = 5.06 using the below shown formula. Z score is 0.67 for X = 5.06.
P(X > 5.06) = P(Z > 0.67) 

fullscreen
Step 2

With reference to below shown Z table the the probability  value to the right of Z score 0.67 is 0.2514.

P(Z > 0.67) = P(X > 5.06) = 0.2514

fullscreen
Step 3

Given sample size of 20 students with mean 5% and standard deviation 0.09%. The standard deviaiton of sample will be =   σ/√n, where n is the sample size and   &sigma...

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour*

See Solution
*Response times may vary by subject and question
Tagged in

Math

Statistics

Related Statistics Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: A random sample of 30 binomial trials resulted in 12 success. Test the claim that the population por...

A: Hey, since there is multiple subpart questions posted, we will answer first three subparts. If you w...

question_answer

Q: (a) In the random number table, assign the digits 0 through 8 to the event "successful surgery" and ...

A: Total number of digits assigned to event "successful surgery" (0-8) = 9Total number of digits assign...

question_answer

Q: A population has a mean of 15 and standard deviation of 3. Round the answers to two decimal places a...

A: Let X be the observation. X follows normal distribution with mean μ = 15 and the standard deviation ...

question_answer

Q: A researcher wants to investigate whether mindfulness training improves ability for employees to not...

A: In an experiment the factor is an explanatory varible which is manipulated by the experimenter. It i...

question_answer

Q: You are asked to design a study to investigate the effectiveness of the Atkins diet (IV = diet, DV =...

A: Consider the population of all individuals in a particular city. A random sample of 40 individuals i...

question_answer

Q: A student takes a multiple-choice test that has 20 questions. Each question has five choices. The st...

A: Binomial distribution:It is a discrete probability distribution in which each trials have exactly tw...

question_answer

Q: Part b, c, d

A: Part b:Denote μ as the true mean breaking strength (after 24 hours) of the new bonding adhesive.The ...

question_answer

Q: The national average for the number of students per teacher for all U.S. public schools in 15.9 Aran...

A: Confidence interval:The (1-α) % confidence interval for population mean µ, when σ is unknown is give...

question_answer

Q: The dose-response effect is best described as A. when similar studies produce similar results B...

A: Introduction:The dose-response effect is a measure of the magnitude of the response in the subjects ...