A manufacturer of chocolate topping uses machines to dispense liquid ingredients into bottles that move along a filling line. The machine that dispenses toppings is working properly when 8 grams are dispensed. The standard deviation of the process is 0.15 gram. Suppose that the average amount dispensed in a particular sample of 25 bottles is 7.982 grams. At the 0.05 level of significance, using the critical value approach to hypothesis testing, is there evidence that the average amount dispensed is less than 8 grams? If the true mean is 7 indeed, what type of error do you have? Seç. z tabulated (critical z value) is: Seç. z calculated is Sç. Test result is: Seç.

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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A manufacturer of chocolate topping uses machines to dispense liquid ingredients into bottles that move
along a filling line. The machine that dispenses toppings is working properly when 8 grams are dispensed.
The standard deviation of the process is 0.15 gram.
Suppose that the average amount dispensed in a particular sample of 25 bottles is 7.982 grams. At the 0.05
level of significance, using the critical value approach to hypothesis testing, is there evidence that the
average amount dispensed is less than 8 grams?
If the true mean is 7 indeed, what type of error do you have? Seç.
z tabulated (critical z value) is:
Seç.
z calculated is
Sç.
Test result is:
Seç.
Transcribed Image Text:A manufacturer of chocolate topping uses machines to dispense liquid ingredients into bottles that move along a filling line. The machine that dispenses toppings is working properly when 8 grams are dispensed. The standard deviation of the process is 0.15 gram. Suppose that the average amount dispensed in a particular sample of 25 bottles is 7.982 grams. At the 0.05 level of significance, using the critical value approach to hypothesis testing, is there evidence that the average amount dispensed is less than 8 grams? If the true mean is 7 indeed, what type of error do you have? Seç. z tabulated (critical z value) is: Seç. z calculated is Sç. Test result is: Seç.
0.6
Do not reject the null hypothesis
-1.645
A manufacturer of chocolate topping uses machines to disper Significance error
along a filling line. The machine that dispenses toppings is wa -1.2
The standard deviation of the process is 0.15 gram.
hove
hsed.
-1.96
Suppose that the average amount dispensed in a particular sa ype Il error
level of significance, using the critical value approach to hypo
e 0.05
1.2
Type I error
average amount dispensed is less than 8 grams?
-0.6
Reject the null hypothesis
-1
If the true mean is 7 indeed, what type of error do you have? Seç.
z tabulated (critical z value) is:
Seç.
z calculated is
Seç.
Test result is:
Seç.
Transcribed Image Text:0.6 Do not reject the null hypothesis -1.645 A manufacturer of chocolate topping uses machines to disper Significance error along a filling line. The machine that dispenses toppings is wa -1.2 The standard deviation of the process is 0.15 gram. hove hsed. -1.96 Suppose that the average amount dispensed in a particular sa ype Il error level of significance, using the critical value approach to hypo e 0.05 1.2 Type I error average amount dispensed is less than 8 grams? -0.6 Reject the null hypothesis -1 If the true mean is 7 indeed, what type of error do you have? Seç. z tabulated (critical z value) is: Seç. z calculated is Seç. Test result is: Seç.
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ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,