A manufacturing process produces tubeless mountain bike tires in batches of 200.Past records show that 6% of the tires will not hold air.An engineer tests five batches,each one week apart,and shows the proportion of tires that will not hold air below.
Proportion of tires that will not hold air: 
a.Construct the centerline and the upper control limit for 
chart.
B)Should the engineer be worried? Comment on any trend in the proportion of tubeless tires that will not hold air.
Definitions:
Merchandise
Goods that are purchased for the purpose of being sold to customers in the retail or wholesale market.
Periodic Inventory System
An inventory system that updates the inventory balance at specific intervals, necessitating physical counts.
Cost of Merchandise
The total purchase cost of goods that a retailer, wholesaler, or distributor has bought for the purpose of reselling.
Freight In
The cost associated with transporting goods from the supplier to the buyer, typically recorded as part of the inventory cost.
Q2: Janice Anooshian asks eight of her friends
Q33: Exhibit 10.1 A farmer uses a lot
Q49: A box plot is useful when comparing
Q51: An analyst believes the probability that U.S.stock
Q58: An analyst is forecasting net income for
Q59: The likelihood of rain has been reported
Q69: In order to estimate the mean earnings
Q74: How do you define the range?<br>A)Q3 -
Q88: Exhibit 11-5.Amie Jackson,a manager at Sigma travel
Q99: A school is required by the government