Based on the given figure above which is about the favorite communication method, we can see that the most favorite is cell phone next and followed by e-mail, then the third one is cell phone call, then instant message, and the least favorite would be landline call. So based on the results, the third most favorite communication method would be cell phone call. The answer is option B.
Answer:
We are given:


Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed.
Since the alternative hypothesis has less than sign, therefore the given hypothesis is left-tailed
What parameter is being tested?
The parameter used is
, which denotes the population mean.
Please note:
The type is test determined based on the alternative hypothesis.
If the alternative hypothesis has
sign, it means the hypothesis test is two-tailed
If the alternative hypothesis has
sign, it means the hypothesis test is right-tailed
If the alternative hypothesis has
sign, it means the hypothesis test is left-tailed
1=a 2=c 3=b ..................
Answer:
7/10 = 63/90
4/9 = 40/90
Step-by-step explanation:
Rewriting input as fractions if necessary:
7/10, 4/9
For the denominators (10, 9) the least common multiple (LCM) is 90.
LCM(10, 9)
Therefore, the least common denominator (LCD) is 90.
Calculations to rewrite the original inputs as equivalent fractions with the LCD:
7/10 = 7/10 × 9/9 = 63/90
4/9 = 4/9 × 10/10 = 40/90