Answer:
D. Only one cleaning product was asked about in the survey.
Any given company can use more than one cleaning product or even use a combination of different cleaning products. The question was not specific enough, since it should have probably asked which cleaning products are used and which ones are used more frequently.
Step-by-step explanation:
the other options are wrong because:
- A. Only 50 cleaning services were surveyed. ⇒ This actually would increase the validity of the claim because it satisfies the the condition for a valid confidence interval [np and n(1 - p) are larger than 10]-
- B. Cleaning services were selected at random. ⇒ This actually would increase the validity of the claim.
- C. A well-known company conducted the survey. ⇒ This actually would increase the validity of the claim.
Answer:
40%
Step-by-step explanation:
20/50
= 2/5
= 0/4
= 40%
Answer:
288
Step-by-step explanation:
40% divide by 100 will equal 0.4
then multiply 0.4 by 720 which equals to 288
Answer:
8 square feet
Step-by-step explanation:
48/12=4
24/12=2
2x4=8
A = (1/2)bh
64 = (1/2)(8)h
16 = h
The height is 16 inches
