Reference no: EM13884262
-In a test of the hypothesis Ho: N= 50 versus Ha: ≠ 50, a sample of N= 50 observations possessed mean × (x bar) = 50.7 and standard deviation s= 4.1. The P value is: P = __ (rd. to 4 decimal places).
-In a study it was found that the average age of cable TV shoppers was 51 years. Suppose you want to test the null hypothesis Ho: µ = 51, using a sample of N= 60 cable TV shoppers.
a. Find the p-value of a two-tailed test if x (x bar) =51.8 and s =10.4. P= ___ (rd. to 4 dec. places).
b. Find the p-value of an upper-tailed test if x (x bar) = 51.8 and s= 10.4. P= ___ (rd. to 4 dec. places).
-Independent random samples from normal populations produced the results shown in the table:
Sample 1: 1.5, 1.9, 1.8, 2.2, 2.4. Sample 2: 3.5, 2.8, 3.1, 3.1.
a. Calculate the pooled estimate of σ2 . S 2p = ___ (Rd. 4 dec. places)
b. Find 95% confidence interval (CI)for (U1 - U2 ). CI is __, __ (rd. 2 dec. places).
-Hotel guests were randomly selected to rate service items on a 5-point scale. Males: Females:
n=124 n=119
x= 39.89 x= 39.38
s= 7.28 s= 7.43
Construct a 95% CI for the difference between the population mean service-rating scores given by male and female guests at the hotel. The 95% CI is __, __ (rd. 3 dec. places).
-Construct a 95% CI for (P1 - P2 ) in each situation.
a. N1 = 400; P^1 =0.63; N2 =400; P^2 =0.57 (^ symbol is above the P). 95% CI for (P1-P2) is __, __
b. N1 =180; p^1= 0.29; N2 =250; P^2 =0.26. 95% CI for (P1-P2) is __, __
c. N1 =100; P^1 =0.45; N2 =120; P^2 =0.59. 95% CI for (P1-P2) is __, __ (rd. nearest thousandth)
|
Describe how the concept of multifactorial etiology relates
: Describe how the concept of multifactorial etiology relates to the natural history of disease and the different levels of prevention
|
|
Relationships among the initial assessed control risk
: Give one example in which the conclusions reached about internal controls in cash disbursements will affect the tests of cash balances.
|
|
Result in a loss of production
: The estimated cost of the pipes, per unit length is: schedule 40 carbon steel $5, schedule 80 carbon steel $8.30, stainless steel (304) schedule 40 $24.80. Installation and fittings for all the materials adds $16.5 per unit length. The downtime re..
|
|
Compares the date of deposit according to the books
: 1.Explain why an auditor compares the date of deposit according to the books to the date of disbursement according to the books on an interbank transfer schedule to detect kiting.
|
|
Find the p-value of a two-tailed test
: Find the p-value of a two-tailed test if x (x bar) =51.8 and s =10.4. P= ___ (rd. to 4 dec. places). Find the p-value of an upper-tailed test if x (x bar) = 51.8 and s= 10.4. P= ___ (rd. to 4 dec. places)
|
|
What factors led to the mortgage default crisis?
: What factors led to the mortgage default crisis?
|
|
Start on the completion of construction
: Construction will take two years, and the capital will be paid in two equal increments, at the end of the first and second years. The savings (income) can be taken as paid at the end of each year. Production will start on the completion of constru..
|
|
Fair value estimates make the audit
: 1.Briefly explain why accounting standards related to fair value estimates make the audit of financial instruments more complex.
|
|
Adsorption system to recover solvent
: An electronics plant uses an adsorption system to recover solvent from a vent gas stream and prevent volatile organic compound (VOC) emissions. The vent gas flow rate is 20 m3 /s of dry air at 293 K, 1.5 atm.
|