State the null hypothesis and alternative hypothesis ONLY

i) One of the major Malaysia tire makers wishes to review its warranty for their rainmaker tire. The warranty is for 40,000 kilometers. The tire company believes that the tire actually lasts more than 40,000 kilometers. A sample 49 tires revealed that the mean number of kilometers is 45,000 kilometers with a standard deviation of 15,000 kilometers. What is the null hypothesis and alternative hypothesis?

ii) It is claimed that in a bushel of peaches less than ten percent are defective. A sample of 400 peaches is examined and 50 are found to be defective. What is the null hypothesis and alternative hypothesis?

Question 2
CCTV and AATV provided a television channel targeted to individuals waiting in supermarket checkout lines. The channel showed news, short features, and advertisements. The length of the program was based on the assumption that the population mean time a shopper stands in a supermarket checkout line is 8 minutes. A sample of actual waiting times will be used to test this assumption and determine whether actual mean waiting time differs from this standard.

|Formulate the hypotheses for this application | | |A sample of 120 shoppers showed a sample mean waiting time of 8.4 minutes. Assume a population standard | | |deviation (σ) = 3.2 minutes. What is the p-value? | | |At α = 0.05, what is your conclusion? | | | | |

Question 3

A cell phone manufacturer claims that its phone will last for more than 8 hours of continuous talk time when the battery is fully charged. To test this...

...“Accept” the NullHypothesis
by Keith M. Bower, M.S. and James A. Colton, M.S.
Reprinted with permission from the American Society for Quality
When performing statistical hypothesis tests such as a one-sample t-test or the AndersonDarling test for normality, an investigator will either reject or fail to reject the nullhypothesis, based upon sampled data. Frequently, results in Six Sigma projects contain
the verbiage...

...Take Home Test 2
1. A. NullHypothesis: There are no relations or associations among the groups’ mean scores.
Alternate Hypothesis: There is a relation or association among the student’s grade point averages and “if they rather prefer to stay at home than go out with friends”.
Correlations |
| Grade Point Average | I would rather stay at home and read than go out with my friends |
Grade Point Average | Pearson Correlation | 1 | .233 |...

...Normal(88.532,5.07943)
Normal(97.1033,5.04488)
Normal(107.15,5.15367)
Summary Statistics
Mean
88.532
Std Dev
5.0794269
Std Err Mean
0.2271589
Upper 95% Mean
88.978306
Lower 95% Mean
88.085694
N
500
Sum
44266
Summary Statistics
Mean
97.103333
Std Dev
5.0448811
Std Err Mean
0.2912663
Upper 95% Mean
97.676525
Lower 95% Mean
96.530142
N
300
Sum
29131
Summary Statistics
Mean...

...Hypothesis testing using the binomial distribution
Chapter assessment
1. Sweets called “Scruffies” are sold in packets of 18.
Scruffies come in a variety of colours, and market research shows that red is the most popular. Scruffies are packed randomly, and on average 25% are red.
(i) Find the probability that a packet contains no more than 6 red Scruffies. [2]
(ii) Find the probability that a packet contains exactly 4 red Scruffies. [2]
Because of a fault in...

...a population mean
b. hypothesis testing between two proportions
c. estimation of a population mean
d. hypothesis testing between two means
RATIONALE: First, check muna if what they’re looking for is mean or proportions. I’m not really sure, but technique ko dyan, pag may mga decimal point, MEAN YUN. Mostly, ang mga MEAN cases ay yung mga blood pressure (systole, diastole). So in this case, you’re just comparing two drugs. Hence, proportions. Also,...

...Iterative
D. Uses multiple sources of evidence
2. Which of the following describes qualitative research?
A. Concepts are in the form of distinct variables
B. Concepts are in the form of themes, motifs, generalisations and taxonomies
C. Tests hypothesis that the researcher begins with
D. Data are in the form of numbers or precise measurements
3. Which of the following is NOT a qualitative sampling technique?
A. Snowballing
B. Convenience
C. Theoretical
D. Random
4....

...Statistics for Business Intelligence – Hypothesis Testing
Index:
1. What is Hypothesis testing in Business Intelligence terms?
2. Define - “Statistical Hypothesis Testing” – “Inferences in Business” – and “Predictive Analysis”
3. Importance of Hypothesis Testing in Business with Examples
4. Statistical Methods to perform Hypothesis Testing in Business Intelligence
5. Identify...

...Elements of a Test of Hypothesis 1. NullHypothesis (H0 ) - A statement about the values of population parameters which we accept until proven false. 2. Alternative or Research Hypothesis (Ha )- A statement that contradicts the nullhypothesis. It represents researcher’s claim about the population parameters. This will be accepted only when data provides suﬃcient evidence to establish its truth. 3. Test...

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