Z-score calculations for statistics students

Reference no: EM13106437

1. The weight of cans of fruit is normally distributed with a mean of 1,000 grams and a standard deviation of 50 grams. What percent of the cans weigh 860 grams or less?

a) 0.0100

b) 0.8400

c) 0.0026

d) 0.0001

2). The mean amount spent by a family of four on food per month is $500 with a standard deviation of $75. Assuming that the food costs are normally distributed, what is the probability that a family spends less than $410 per month?

a) 0.2158

b) 0.8750

c) 0.0362

d) 0.1151

Reference no: EM13106437

Questions Cloud

Standard scores in populations : A population with u=73 and o=9 is transformed into a new population with u=10 and o=2. What is the new value for each of the following scores in the population?

Describe active threat and opportunity management process : We have now covered the steps of the Active Threat and Opportunity Management (ATOM) process. What is your opinion of the process as it relates to risk management?

Standardized z-scores for comparisons : How can standardized z-scores be used to compare people across different contexts, such as the batting averages of two players -one who played in the 1970s and one who played in the 1990s?

Using z score to figure out percentage : The mean starting salary for college graduates in the spring of 2000 was$31,280. Assume that the distribution of starting salaries follows the normal distribution with a standard deviation of 3,330.

Z-score calculations for statistics students : The weight of cans of fruit is normally distributed with a mean of 1,000 grams and a standard deviation of 50 grams. What percent of the cans weigh 860 grams or less?

Discuss the aspects of total quality management : Discuss the aspects of Total Quality Management (TQM) and how they apply in service- and product-based businesses.

Distinguish political-ethical views of hobbes with aristotle : Write down the essay comparing and contrasting political and ethical views of Hobbes with Aristotle. Ensure to give the analysis of human nature, whether or not we are naturally social beings.

Relationship of z score and normal distribution : What role do z-scores play in this transformation of data from multiple distributions to the standard normal distribution? What is the relationship between z-scores and percentages?

What is the increase in the internal energy of the neon : Suppose a tank contains 770 m3 of neon (Ne) at an absolute pressure of 1.01×105 Pa. The temperature is changed from 293.2 to 295.6 K. What is the increase in the internal energy of the neon?

User Account

All Pages