还是英文的统计学问题weekly demand at a grocery store for a brand of br
来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/10/05 04:30:00
还是英文的统计学问题
weekly demand at a grocery store for a brand of breakfast cereal is normally distributed with a mean of 800 boxes and a standard deviation of 75 boxes.
a) what is the probability that weekly demand is more than 959 boxes?
b) what is the probability that weekly demand is between 650 boxes and 950 boxes?
c) the store orders cereal from a distributor weekly.how many minimun of boxes should the store order for a week to have at most a 1% chance of running short of this brand of cereal during the week?
d).what is the probability that a segment of 6 brands in the grocery store have a weekly mean demand that is greater than 900 boxes?
我是在问统计学 不是翻译
weekly demand at a grocery store for a brand of breakfast cereal is normally distributed with a mean of 800 boxes and a standard deviation of 75 boxes.
a) what is the probability that weekly demand is more than 959 boxes?
b) what is the probability that weekly demand is between 650 boxes and 950 boxes?
c) the store orders cereal from a distributor weekly.how many minimun of boxes should the store order for a week to have at most a 1% chance of running short of this brand of cereal during the week?
d).what is the probability that a segment of 6 brands in the grocery store have a weekly mean demand that is greater than 900 boxes?
我是在问统计学 不是翻译
1)用950-800=150,再用150除于标准差75,得到2,查正态分布表得临界值2对应的概率大约为5%,所以提供950份以上的概率是5%
2)800-650=150,因为正态分布是对称的,所以提供650份以下的概率是5%,650份到950份之间的概率为90%
3)查正态分布表,得出1%时的临界值,用其乘以标准差得出一个数,再用800减去这个数就是结果
4)应该是一个联合分布的问题吧,题意理解不清,sorry.
2)800-650=150,因为正态分布是对称的,所以提供650份以下的概率是5%,650份到950份之间的概率为90%
3)查正态分布表,得出1%时的临界值,用其乘以标准差得出一个数,再用800减去这个数就是结果
4)应该是一个联合分布的问题吧,题意理解不清,sorry.
英语翻译Since I started working part-time at a grocery store,I h
A friend and I were stangding in line at the grocery store t
A friend and I were standing in line at the grocery store th
英文two friedns see each other in a grocery store.initially,th
用英文解释地点 laundromat,grocery store,barber shop 套用此句型 It's a pl
英语翻译这句话的下一句是:and you will run into a big grocery store.
people may go to a small grocery store to buy food.中间的to buy
问几个英语的问题,是at supermarket还是at the supermarket,是at grocery sto
英语翻译A store normally sells each of its DVDs for $20.At a sal
A grocery customer spent a total of $9.6 for ground beef and
grocery store
法律学中demand 英文的解释是:Correspondence from a lawyer on behalf of