For this problem you must state the null and alternative hypothesis, the critical value/s and/ or...
For this problem you must state the null and alternative hypothesis, the critical value/s and/ or the rejection graph, the test statistic, a sentence describing your results, and the p-value of rejection.
5. The manufacturer of the I-phones wanted to know whether a 10% reduction in a price of I-phone is enough to increase the sales of its product. To investigate, the manufacturer randomly selected 8 outlet stores and sold the I-phones at the reduced rate. The mean number sold at the reduce price was 125 with a standard deviation of 10. When 7 randomly selected outlets sold the I-phone at the regular price, the mean number of I-phones sold was at 117 with a standard deviation of 12. Using 10% significance level, can the manufacturer conclude that the price reduction results is an increase of sales, when the population is normally distributed?
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For this problem you must state the null and alternative
hypothesis, the critical value/s and/ or...
The manufacturer of an MP3 player wanted to know whether a 10% reduction in price is...
The manufacturer of an MP3 player wanted to know whether a 10% reduction in price is enough to increase the sales of its product. To investigate, the owner randomly selected eight outlets and sold the MP3 player at the reduced price. At seven randomly selected outlets, the MP3 player was sold at the regular price. Reported below is the number of units sold last month at the regular and reduced prices at the randomly selected outlets. Regular price 134 125...
The manufacturer of an MP3 player wanted to know whether a 10% reduction in price is...
The manufacturer of an MP3 player wanted to know whether a 10% reduction in price is enough to increase the sales of its product. To investigate, the owner randomly selected eight outlets and sold the MP3 player at the reduced price. At seven randomly selected outlets, the MP3 player was sold at the regular price. Reported below is the number of units sold last month at the regular and reduced prices at the randomly selected outlets. Regular price 134 129...
The manufacturer of an MP3 player wanted to know whether a 10% reduction in price is enough to increase the sales of its product. To investigate, the owner randomly selected eight outlets and sold...
The manufacturer of an MP3 player wanted to know whether a 10% reduction in price is enough to increase the sales of its product. To investigate, the owner randomly selected eight outlets and sold the MP3 player at the reduced price. At seven randomly selected outlets, the MP3 player was sold at the regular price. Reported below is the number of units sold last month at the sampled outlets. Regular price 100 78 102 80 85 109 103 Reduced price...
For each of the problems below perform an hypothesis test. State the null and alternative hypothesis, the p-value and your conclusion in context of the problem. Perform each test at a .05 significance...
For each of the problems below perform an hypothesis test. State the null and alternative hypothesis, the p-value and your conclusion in context of the problem. Perform each test at a .05 significance. 1. A manufacturer of a plasticised line used in home-assembly mobiles advertises that their product has an average tensile strength of 30 kilograms (this is a measure of how strong the product is). You took a sample of 144 sections of the line and tested them. The...
State the hypotheses and identify the claim, find the critical value(s), compute the test value, make...
State the hypotheses and identify the claim, find the critical value(s), compute the test value, make the decision, summarize the results (make the appropriate statement of the results of the claim included rejection or non-rejection of the null hypothesis). Please show all of your work. 3)The number of annual precipitation days for one-half of the 50 largest U.S. cities is listed below. Do the following: 131 94 136 88 116 77 127 79 47 97 116 123 88 102 27...
Please list the steps- State hypothesis Critical values Test statistics decision and summarize A real estate...
Please list the steps- State hypothesis Critical values Test statistics decision and summarize A real estate agent compares the selling prices of randomly selected homes in two municipalities in southwestern Pennsylvania to see if there is a difference. The results of the study are shown below. Is there enough evidence to suggest that the average cost of a home in both locations is the same? Use ? = 0.01. Scott Sample size 35 Mean selling price $93,430 Population standard deviation...
What are the null and alternative hypothesis? what is the test statistic? What is the P-value?...
What are the null and alternative hypothesis?
what is the test statistic?
What is the P-value?
What is the appropriate conclusion?
Researchers wanted to see if a certain image in ads affected people's ability to remember the item being advertised. They found two ads for each of 10 similar items, one with the image and one without. Then they showed the ads in random order to 39 randomly selected people for one minute and asked them to list as many...
Test the following claim. Identify the null hypothesis, alternative hypothesis, test statistic, critical value(s), conclusion about...
Test the following claim. Identify the null hypothesis, alternative hypothesis, test statistic, critical value(s), conclusion about the null hypothesis, and final conclusion that addresses the original claim. A manual states that in order to be a hit, a song must be no longer than three minutes and thirty seconds (or 210 seconds). A simple random sample of 50 current hit songs results in a mean length of 252.5 sec. Assume the population standard deviation of song lengths is 53.5 sec....
a. find the critical value(s) b. find the test values c. reject/do not reject the hypothesis...
a. find the critical
value(s)
b. find the test values
c. reject/do not reject the hypothesis
The average sales price of new one-family houses in the Midwest is $246,200 and in the South is $261,800. A random sample of 40 houses in each region was examined with the following results. At the 0.10 level of significance, can it be concluded that the difference in mean sales price for the two regions is greater than $3400? South Midwest Sample size 40...
also calculate: the critical value(s), the test values, and reject/do not reject the hypothesis The average...
also calculate: the critical
value(s), the test values, and reject/do not reject the
hypothesis
The average sales price of new one-family houses in the Midwest is $252,400 and in the South is $259,500. A random sample of 36 houses in each region was examined with the following results. At the 0.05 level of significance, can it be concluded that the difference in mean sales price for the two regions is greater than $3400? Midwest South Sample size 36 36 Sample...
What are the null and alternative hypothesis?
what is the test statistic?
What is the P-value?
What is the appropriate conclusion?
Researchers wanted to see if a certain image in ads affected people's ability to remember the item being advertised. They found two ads for each of 10 similar items, one with the image and one without. Then they showed the ads in random order to 39 randomly selected people for one minute and asked them to list as many...
Test the following claim. Identify the null hypothesis, alternative hypothesis, test statistic, critical value(s), conclusion about the null hypothesis, and final conclusion that addresses the original claim. A manual states that in order to be a hit, a song must be no longer than three minutes and thirty seconds (or 210 seconds). A simple random sample of 50 current hit songs results in a mean length of 252.5 sec. Assume the population standard deviation of song lengths is 53.5 sec....
a. find the critical
value(s)
b. find the test values
c. reject/do not reject the hypothesis
The average sales price of new one-family houses in the Midwest is $246,200 and in the South is $261,800. A random sample of 40 houses in each region was examined with the following results. At the 0.10 level of significance, can it be concluded that the difference in mean sales price for the two regions is greater than $3400? South Midwest Sample size 40...
also calculate: the critical
value(s), the test values, and reject/do not reject the
hypothesis
The average sales price of new one-family houses in the Midwest is $252,400 and in the South is $259,500. A random sample of 36 houses in each region was examined with the following results. At the 0.05 level of significance, can it be concluded that the difference in mean sales price for the two regions is greater than $3400? Midwest South Sample size 36 36 Sample...
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