Does an average pack of banana bread cookies weighs 40 grams? A
random sample of 35...
Does an average pack of banana bread cookies weighs 40 grams? A
random sample of 35 boxes showed a mean of 41.95 grams. The company
has specified the population standard deviation to be 5 grams. Test
at the 0.10 level of significance. *
Solutions
Expert Solution
Dear student,
I am waiting for your feedback. I have given my 100% to solve your
queries. If you satisfied with my answer then please please like
this.
Thank You
Q1. Does an average box of cereal contain 368 grams of cereal? A
random sample of 36 boxes had a mean of 372.5 and a standard
deviation of 12 grams. Test at the .05 level of significance.
5. A U.S dime weighs 2.260 grams when minted. A random sample of
20 circulated dimes showed a mean weight of 2.248 grams with a
standard deviation of .024 grams. Using alpha = 0.01, is the mean
weight of all circulated dimes lower than the mean weight? What is
the Excel formula to calculate the p-value?
The average price for an oil change is 35$ . In random sample of
20 oil changes, find the probability that the mean cost exceeds 42$
given that the population standard deviation is 87$. Please draw
everything out so I can understand
A random sample of 80 baby boys, show they weighed 3000 grams on
average with a standard deviation of 100, at birth. While a random
sample of 60 baby girls show they weighed 2800 grams on average
with a standard deviation of 70. In order to test the hypothesis
that if baby boys and girls weights have the same variance or not,
what is the value of test statistic?
A) 2.041
B) 0.490
C) 0.7
D) 1.429
The average selling price of a smartphone purchased by a random
sample of 40 customers was $308. Assume the population standard
deviation was $30. Using a 95% confidence interval to estimate the
average selling price in the population ranges from $298.70 to
$313.70.
Question 3 options:
True
False
[Chocolate Chip Cookies] Consider a sample of 40 Chips Ahoy
chocolate chip cookies. The mean number of chips per cookie is
23.95 chips and the standard deviation of all Chips Ahoy regular
cookies is known to be 2.55 chips. Use a (alpha)=0.01 to test the
claim that the mean number of chips is greater than 23.
a.) what parameter is this addressing?
b.) identify the null and alternative hypotheses using math
notation.
c.) calculate the test statistic (critical value is...
The average number of pages for a simple random sample of 40
physics textbooks is 435. The average number of pages for a simple
random sample of 30 mathematics textbooks is 410. Assume that all
page length for each types of textbooks is normally distributed.
The standard deviation of page length for all physics textbooks is
known to be 55, and the standard deviation of page length for all
mathematics textbooks is known to be 55. Part One: Assuming that...
A random sample of 40 bags of flour is weighed. It is found that
the sample mean is 453.08 grams. All weights of the bags of flour
have a population standard deviation of 5.42 grams. What is the
lower limit of an 80% confidence interval for the population mean
weight?
Select one:
A. No solution
B. 451.983 grams
C. 452.360 grams
D. 452.405 grams
After interviewing a sample of 100 residents of New Taipei City,
you find that the mean...
A random sample of 40 bags of flour is weighed. It is found that
the sample mean is 453.08 gram. All weights of the bags of flour
have a population standard deviation of 5.42 gm. What is the lower
confidence limit (LCL) of an 80% confidence interval for the
population mean weight?
.
Thenutritionlabelonabagofpotatochipssaysthataoneounceservingofpotatochipshas130calories.
A random sample of 35 bags yielded a sample mean of 134 calories
with a standard deviation of 17 calories. Is there significant
evidence that the nutrition label does not provide an accurate
measure of calories in the bags of potato chips? Answer this
question using the hypothesis testing framework. Explicitly give
the p-value for your test.