A machining process produces screws for which the
population proportion of screws with defective threads is .10
(10%). A new laser-enhanced process has become
available and the developer claims that the population proportion
of screws with defective threads will be less than .10. To test the
validity of this claim, 900 screws produced by the new process are
selected at random and the sample proportion of defectives is
computed. This result will be used to make a decision as to whether
or not the manufacturer should invest in the new
process.
Which of the following should be used as the alternative
hypothesis?
Select one:
A. p > 0.10
B. p ≤. 0.10
C. p ≥. 0.10
D. p = 0.10
E. p < 0.10
Solution :
This is the left tailed test .
The null and alternative hypothesis is
H0 : p =0.10
Ha : p < 0.10
correct option E. p < 0.10
A machining process produces screws for which the population proportion of screws with defective threads is...
a) the sample proportion of women who suffer side effects is 10 b) the population proportion of women who suffer side effects is 10%. c) the sample proportion of women who suffer side effects is not equal to 10%. d) the population proportion of women who suffer side effects is greater than 10% e) the sample proportion of women who suffer side effects is less than 10%. 12-19. An auto manufacturer claims that its new 4 cylinder auto with manual...
Test the hypothesis using the P-value approach. Ho: p 0.55 versus H1 p0.55 n-150, X-78, α-0.10 Perform the test using the P-value approach. P-value(Round to four decimal places as needed.) Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho: p=0.72 versus H1 : p#0.72 n 500, x-350, o 0.05 Is npo (1-Po) 210? Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or...
1. We reject the null hypothesis only when: a. our sample mean is larger than the population mean. b. the p value associated with our test statistic is greater than the significance level of the test we have chosen. c. our sample mean is smaller than the population mean. d. the p value associated with our test statistic is smaller than the significance level of the test we have chosen. 2. In a study of simulated juror decision making, researchers...
need help with this ..
From the pages 571-587 attached below.
1a) Suppose a population of guppies was infected with a
parasite. In that population a mutation results in a parasite
resistant genotype that spreads through the population through
natural selection. A subsequent mutation in the parasite results in
a genotype that is unaffected by the newly evolved resistant guppy
genotype. What is the name of the hypothesis that explains this
host parasite “arms race”.?
1b) What is this name...
I need Summary of this Paper i dont need long summary i need
What methodology they used , what is the purpose of this paper and
some conclusions and contributes of this paper. I need this for my
Finishing Project so i need this ASAP please ( IN 1-2-3 HOURS
PLEASE !!!)
Budgetary Policy and Economic Growth Errol D'Souza The share of capital expenditures in government expenditures has been slipping and the tax reforms have not yet improved the income...