Answer:I think d
Step-by-step explanation:
Answer:
(c) H0 should be rejected
Step-by-step explanation:
Null hypothesis (H0): population mean is equal to 5
Alternate hypothesis (Ha): population mean is greater than 5
Z = (sample mean - population mean) ÷ (sd/√n)
sample mean = 5.3, population mean = 5, sd = 1, n = 500
Z = (5.3 - 5) ÷ (1/√500) = 0.3 ÷ 0.045 = 6.67
Using the normal distribution table, for a one tailed test at 0.01 significance level, the critical value is 2.326
Conclusion:
Since 6.67 is greater than 2.326, reject the null hypothesis (H0)
Answer:
the answer is C
Step-by-step explanation:
so you see that it says you want to measures the amount of water
Answer:
$18.02
Step-by-step explanation:
25 is the original price
25 times .2(20%) means you get a $5 discount, then you have a price of $20 for the item. Multiply that by .15(15%) for an additional discount of $3, making the item $17 now. 17 times .06(6%) gives you the tax of 1.02, and add that to the item price and you get a total of $18.02