Answer:
0.0139
Explanation:
Given that:
The number of sample (n) = 21
The sample distribution has mean (μ) and a standard deviation of σ/√n
The z score is given as (x - mean)/ standard deviation
x = 94.8 wpm, let us assume that σ = 10 and μ = 90
Therefore: z = (x - μ) / (σ/√n) = (94.8 - 90) / (10/√21) = 2.2
To calculate the probability using Z table:
P(X>94.8) = P(Z>94.8) = 1 - P(Z<94.8) = 1 - 0.9861 = 0.0139
The probability is low that is less than 0.05, the program is more effective than the old one.
It is indicating that an account balance decreased as a result of a reason other than a cash withdrawal or cashed check
When a 1 percent decrease in price produces more than a 1 percent increase in quantity sold, the product or service is an Elastic Demand.
<h3>
What is an Elastic Demand?</h3>
- Elastic demand is measured by its percent of change in demand divided by its percent of change in price, provided all other factors remain the same.
- If the change in price and change in demand is proportionate, the item is neither elastic nor inelastic.
- An item has elastic demand if its demand changes more than its price changes.
- For example, if two stores sell identical products of the same amount for different prices, incase of a perfectly elastic demand nobody would buy from the seller with higher priced product.
Learn more about Elastic Demand here:
brainly.com/question/14897348
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