Statistics and Probability Answers

the subject group head of shs mathematics department announced that the mean percentage score of grade 11 learning in the 3rd quarter grade in statistic and probability was it in 9 in the standard deviation was 12 one learned who believed that the mean percentage score was less than this randomly selected 34 learner in computed their mean scores obtained a mean percentage score of 85 at 0.01 level of significance test the learners belief

1. A certain report claims that less than 40% of BTS fans based on Southeast Asia come from the Philippines.

H₀: ___________________________________________________________

H_a: ___________________________________________________________

1. A college dean reported that 80% of all students majoring in Math are males.

H₀: ___________________________________________________________

        H_a: ___________________________________________________________ 

1. According to certain research, it is believed that 45% of first-time brides in the Philippines are younger than their grooms. 

H₀: ___________________________________________________________

H_a: ___________________________________________________________ 

Find the sample proportion.

1. n = 80, x = 68

2. n = 1500, x = 785

1.(Binomial Distribution)Telephone manufacturers now offer 1000 different choices for a telephone (as combinations of color, type, options, portability, etc.). A company is opening a large regional office, and each of its 200 managers is allowed to order his or her own choice of a telephone. Assuming independence of choices and that each of the 1000 choices is equally likely, what is the probability that a particular choice will be made by none, one, two, or three of the managers?

The average number of automobiles per minute stopping for gas at a particular service station along the coastal road is 4 what is the probability that in any given minute more than two will stop for gas

Samples of size 25 are selected from a population with a mean of 40 and a standard deviation of 7.5 what is the mean of error of the sampling distribution of sample means

Three airlines serve a Srinagar. Airline ‘Amira’ has 50% of all the scheduled flights,

airline ‘Biyas’ has 30%, and airline ‘chinar’ has the remaining 20%. Their on-time rates

are 80%, 65%, and 40%, respectively. Part 1) Draw the Probability tree diagram. (Note: You may use any software for this, like

MS paint, MS office, etc.)

Find each of the following percentile points

under the normal curve.

1. P76

2. P85

3. P39

4. P51

5. P88