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Youre trying your hand at snowboarding and observe the probability that the other snowboarder will make it down the slope without falling over is 0.4. What is the probability that you will need more than 4 attempts to be successful?
A pizza shop has a staff of 25 workers who deliver 175 pizzas in a day. Today, 5 of your workers have fallen sick and have taken a holiday. What is the probability that you will be able to service an increased demand / delivery of 25% today through the remaining workers?
A gambler plays roulette at Monte Carlo and continues gambling, wagering the same amount each time on Red, until he wins for the first time. If the probability of Red is 18/38 and the gambler has only enough money for 5 trials, then what is the probability that he wins on the second trial?
On a five questions, multiple choice test, there are 5 possible answers of which 1 is correct. If a student guesses randomly and independently, what is the probability that she is correct only on 2 questions?
The number of traffic accidents per week in a small city has a mean equal to 3. What is the probability of exactly 2 accidents occurring in 2 weeks?
Hi:u=85 Ha:u=85
The sample mean is 83,the sample size is 39,and the standard deviation is 5. Use a=0.05
A score with a value less than or equal to the mean will have a z-score that is less than or equal to zero.
1. SJS Company has been selling to retail customers in the Metro Manila area. They advertise
extensively on radio, print ads, and in the internet. The owner would like to review the
relationship between the amount spent on advertising expense ( in 1000s) and sales (in ₱000s).
Below is information on advertising expense and sales for the last 9 months.
Month Jan Feb Mar Apr May Jun Jul Aug Sept
Advertising
Expense 10 14 12 9 13 15 8 13 16
Sales
Revenue 180 170 190 220 235 208 215 175 250
. The hospital record shows that the mean weight of newly born baby is greater than 7 lbs. A researcher takes a sample of 25 newly born babies and found to have a mean weight of 6.97lbs with the standard deviation of 0.77 lbs. Test the claim at 0.05 level of significance.
A rural health unit conducted a survey on the heights of the male aged 18 to 24 years old it was found out that the mean height of male aged 18 to 24 years old was 70 inches test the hypothesis that the mean height of the male aged 18 to 24 years old is not 70 inches if a random sample of 20 male aged 18 to 24 years old had a mean height of 65 inches with a standard deviation of 3 use 1% level of significance
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#340153 on Dec 2023