The manufacturer of a new racecar engine claims that the proportion of engine failures due to...
The manufacturer of a new racecar engine claims that the proportion of engine failures due to overheating for this new engine, (p1), will be no higher than the proportion of engine failures due to overheating of the old engines, (p2). To test this statement, NASCAR took a random sample of 185 of the new racecar engines and 150 of the old engines. They found that 22 of the new racecar engines and 11 of the old engines failed due to overheating during the test. Does NASCAR have enough evidence to reject the manufacturer's claim about the new racecar engine? Use a significance level of ?=0.05 for the test.
Step 1 of 6 : State the null and alternative hypotheses for the test.
and the rest of the six steps
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The manufacturer of a new racecar engine claims that the
proportion of engine failures due to...
The manufacturer of a new racecar engine claims that the proportion of engine failures due to...
The manufacturer of a new racecar engine claims that the proportion of engine failures due to overheating for this new engine, (p1), will be no higher than the proportion of engine failures due to overheating of the old engines, (p2). To test this statement, NASCAR took a random sample of 120 of the new racecar engines and 115 of the old engines. They found that 7 of the new racecar engines and 4 of the old engines failed due to...
The manufacturer of a new racecar engine claims that the proportion of engine failures due to...
The manufacturer of a new racecar engine claims that the proportion of engine failures due to overheating for this new engine, (p), will be no higher than the proportion of engine failures due to overheating of the old engines, (p). To test this statement, NASCAR took a random sample of 235 of the new racecar engines and 190 of the old engines. They found that 24 of the new racecar engines and I l of the old engines failed due...
The manufacturer of a new racecar engine claims that the proportion of engine failures due to...
The manufacturer of a new racecar engine claims that the proportion of engine failures due to overheating for this new engine, (p1)(p1), will be no higher than the proportion of engine failures due to overheating of the old engines, (p2)(p2). To test this statement, NASCAR took a random sample of 120120 of the new racecar engines and 115115 of the old engines. They found that 77 of the new racecar engines and 44 of the old engines failed due to...
The manufacturer of a new racecar engine claims that the proportion of engine failures due to...
The manufacturer of a new racecar engine claims that the proportion of engine failures due to overheating for this new engine, (p1), will be no higher than the proportion of engine failures due to overheating of the old engines, (p2). To test this statement, NASCAR took a random sample of 120 of the new racecar engines and 110 of the old engines. They found that 14 of the new racecar engines and 8 of the old engines failed due to...
The manufacturer of a certain engine treatment claims that if you add their product to your...
The manufacturer of a certain engine treatment claims that if you add their product to your engine, it will be protected from excessive wear. An infomercial claims that a woman drove 4 hours without oil, thanks to the engine treatment. A magazine tested engines in which they added the treatment to the motor oil, ran the engines, drained the oil, and then determined the time until the engines seized. Complete parts (a) and (b) below. Determine the null and alternative...
14 of 32 (19 complete The manufacturer of a certain engine treatment claims that if you...
14 of 32 (19 complete The manufacturer of a certain engine treatment claims that if you add their product to your engine, it will be protected from excessive wear. An infomercial claims that a woman drove 4 hours without thanks to the engine treatment. A magazine tested engines in which drained the oil and then determined the time until the engines seized Complete parts (a) and (b) below (a) Determine the null and alternative hypotheses that the magazine will test....
A manufacturer claims that the mean lifetime of its lithium batteries is 1101 hours. A homeowner...
A manufacturer claims that the mean lifetime of its lithium batteries is 1101 hours. A homeowner selects 25 of these batteries and finds the mean lifetime to be 1081 hours with a standard deviation of 81 hours. Test the manufacturer's claim. Use a = 0.05. OA. p-value = 0.114 > 0.05; do not reject the Ho; there is enough evidence to support the claim. OB. p-value = 0.114 > 0.05; reject the Ho; there is not enough evidence to support...
To step Tro 07:30 A salesman for a new manufacturer of cellular phones claims not only...
To step Tro 07:30 A salesman for a new manufacturer of cellular phones claims not only that they cost the retailer less but also that the percentage of defective cellular phones found among his products. (Pi ). will be no higher than the percentage of defectives found in a competitor's line. (P2). To test this statement, the retailer took a random sample of 130 of the salesman's cellular phones and 105 of the competitor's cellular phones. The retailer found that...
A manufacturer claims that the mean lifetime of its lithium batteries is less than 1095 hours....
A manufacturer claims that the mean lifetime of its lithium batteries is less than 1095 hours. A homeowner selects 27 of these batteries and finds the mean lifetime to be 1065 hours with a standard deviation of 76 hours. Test the manufacturer's claim. Use a = 0.02. P-value = 0.112 > 0.02; do not reject H0; There is not enough evidence support the claim that mean is less than 1500. ОА P-value = 0.025 0.02, do not reject HO, There...
A salesman for a new manufacturer of cellular phones claims not only that they cost the...
A salesman for a new manufacturer of cellular phones claims not only that they cost the retailer less but also that the percentage of defective cellular phones found among his products, ( p1 ), will be no higher than the percentage of defectives found in a competitor's line, ( p2 ). To test this statement, the retailer took a random sample of 210 of the salesman's cellular phones and 175 of the competitor's cellular phones. The retailer found that 24 of...
The manufacturer of a new racecar engine claims that the proportion of engine failures due to overheating for this new engine, (p), will be no higher than the proportion of engine failures due to overheating of the old engines, (p). To test this statement, NASCAR took a random sample of 235 of the new racecar engines and 190 of the old engines. They found that 24 of the new racecar engines and I l of the old engines failed due...
The manufacturer of a certain engine treatment claims that if you add their product to your engine, it will be protected from excessive wear. An infomercial claims that a woman drove 4 hours without oil, thanks to the engine treatment. A magazine tested engines in which they added the treatment to the motor oil, ran the engines, drained the oil, and then determined the time until the engines seized. Complete parts (a) and (b) below. Determine the null and alternative...
14 of 32 (19 complete The manufacturer of a certain engine treatment claims that if you add their product to your engine, it will be protected from excessive wear. An infomercial claims that a woman drove 4 hours without thanks to the engine treatment. A magazine tested engines in which drained the oil and then determined the time until the engines seized Complete parts (a) and (b) below (a) Determine the null and alternative hypotheses that the magazine will test....
A manufacturer claims that the mean lifetime of its lithium batteries is 1101 hours. A homeowner selects 25 of these batteries and finds the mean lifetime to be 1081 hours with a standard deviation of 81 hours. Test the manufacturer's claim. Use a = 0.05. OA. p-value = 0.114 > 0.05; do not reject the Ho; there is enough evidence to support the claim. OB. p-value = 0.114 > 0.05; reject the Ho; there is not enough evidence to support...
To step Tro 07:30 A salesman for a new manufacturer of cellular phones claims not only that they cost the retailer less but also that the percentage of defective cellular phones found among his products. (Pi ). will be no higher than the percentage of defectives found in a competitor's line. (P2). To test this statement, the retailer took a random sample of 130 of the salesman's cellular phones and 105 of the competitor's cellular phones. The retailer found that...
A manufacturer claims that the mean lifetime of its lithium batteries is less than 1095 hours. A homeowner selects 27 of these batteries and finds the mean lifetime to be 1065 hours with a standard deviation of 76 hours. Test the manufacturer's claim. Use a = 0.02. P-value = 0.112 > 0.02; do not reject H0; There is not enough evidence support the claim that mean is less than 1500. ОА P-value = 0.025 0.02, do not reject HO, There...
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